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Network Working Group M. Baer
Request for Comments: 4807 Sparta, Inc.
Category: Standards Track R. Charlet
Self
W. Hardaker
Sparta, Inc.
R. Story
Revelstone Software
C. Wang
ARO
March 2007
IPsec Security Policy Database Configuration MIB
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document defines a Structure of Management Information Version 2
(SMIv2) Management Information Base (MIB) module for configuring the
security policy database of a device implementing the IPsec protocol.
The policy-based packet filtering and the corresponding execution of
actions described in this document are of a more general nature than
for IPsec configuration alone, such as for configuration of a
firewall. This MIB module is designed to be extensible with other
enterprise or standards-based defined packet filters and actions.
Baer, et al. Standards Track [Page 1]
RFC 4807 IPsec SPD configuration MIB March 2007 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. The Internet-Standard Management Framework . . . . . . . . . . 3 4. Relationship to the DMTF Policy Model . . . . . . . . . . . . 3 5. MIB Module Overview . . . . . . . . . . . . . . . . . . . . . 4 5.1. Usage Tutorial . . . . . . . . . . . . . . . . . . . . . . 6 5.1.1. Notational Conventions . . . . . . . . . . . . . . . . 6 5.1.2. Implementing an Example SPD Policy . . . . . . . . . . 7 6. MIB Definition . . . . . . . . . . . . . . . . . . . . . . . . 8 7. Security Considerations . . . . . . . . . . . . . . . . . . . 65 7.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . 65 7.2. Protecting against Unauthenticated Access . . . . . . . . 66 7.3. Protecting against Involuntary Disclosure . . . . . . . . 66 7.4. Bootstrapping Your Configuration . . . . . . . . . . . . . 67 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 67 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 68 10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 68 10.1. Normative References . . . . . . . . . . . . . . . . . . . 68 10.2. Informative References . . . . . . . . . . . . . . . . . . 69 Baer, et al. Standards Track [Page 2]
RFC 4807 IPsec SPD configuration MIB March 2007 1. Introduction This document defines a MIB module for configuration of an IPsec security policy database (SPD). The IPsec model this MIB is designed to configure is based on the "IPsec Configuration Policy Model" (IPCP) [RFC3585]. The IPCP's IPsec model is, in turn, derived from the Distributed Management Task Force's (DMTF) IPsec model (see below) and from the IPsec model specified in RFC 2401 [RFC2401]. Note: RFC 2401 has been updated by RFC 4301 [RFC4301], but this implementation is based on RFC 2401. The policy-based packet filtering and the corresponding execution of actions configured by this MIB is of a more general nature than for IPsec configuration only, such as for configuration of a firewall. It is possible to extend this MIB module and add other packet-transforming actions that are performed conditionally on an interface's network traffic. The IPsec- and IKE-specific actions are as documented in [IPsec-ACTION] and [IKE-ACTION], respectively, and are not documented in this document. 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. 3. The Internet-Standard Management Framework For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410] Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580]. 4. Relationship to the DMTF Policy Model The Distributed Management Task Force (DMTF) has created an object oriented model of IPsec policy information known as the IPsec Policy Model White Paper [IPPMWP]. The "IPsec Configuration Policy Model" (IPCP) [RFC3585] is based, in large part, on the DMTF's IPsec policy model and on RFC 2401 [RFC2401]. The IPCP document describes a model Baer, et al. Standards Track [Page 3]
RFC 4807 IPsec SPD configuration MIB March 2007 for configuring IPsec. This MIB module is a task-specific derivation (i.e., an SMIv2 instantiation) of the IPCP's IPsec configuration model for use with Simple Network Management Protocol version 3 (SNMPv3). The high-level areas where this MIB module diverges from the IPCP model are: o Policies, Groups, Conditions, and some levels of Actions are generically named. In other words, IPsec-specific prefixes like "SA" (Security Association), or "IPsec", are not used. This naming convention is used because packet classification and the matching of conditions to actions is more general than IPsec. The tables in this document can possibly be reused by other packet- transforming actions, which need to conditionally act on packets matching filters. o Filters are implemented in a more generic and scalable manner, rather than enforcing the condition/filtering pairing of the IPCP and its restrictions upon the user. This MIB module offers a compound filter object providing greater flexibility for complex filters than the IPCP. 5. MIB Module Overview The MIB module is modularized into several different parts: rules, filters, and actions. The rules section associates endpoints and groups of rules, and consists of the spdEndpointToGroupTable, spdGroupContentsTable, and the spdRuleDefinitionTable. Each row of the spdRuleDefinitionTable connects a filter to an action. It should also be noted that by referencing the spdCompoundFilterTable, the spdRuleDefinitionTable's filter column can indicate a set of filters to be processed. Likewise, by referencing the spdCompoundActionTable, the spdRuleDefinitionTable's action column can indicate multiple actions to be executed. This MIB is structured to allow for reuse through the future creation of extension tables that provide additional filters and/or actions. In fact, the companion documents to this one ([IPsec-ACTION] and [IKE-ACTION]) do just that and define IPsec- and IKE-specific actions to be used within this SPD configuration MIB. Note: it is expected that, in order to function properly, extension action MIBs may impose additional limitations on the objects in this MIB and how they can be used with the extended actions. An extension action may only support a subset of the configuration options available in this MIB. Baer, et al. Standards Track [Page 4]
RFC 4807 IPsec SPD configuration MIB March 2007 The filter section of the MIB module is composed of the different types of filters in the Policy Model. It is made up of the spdTrueFilter, spdCompoundFilterTable, spdSubfiltersTable spdIpHeaderFilterTable, spdIpOffsetFilterTable, spdTimeFilterTable, spdIpsoHeaderFilterTable. The action section of this MIB module contains only the simple static actions required for the firewall processing that an IPsec SPD implementation requires (e.g., accept, drop, log, etc.). The companion documents of this document define the complex actions necessary for IPsec and IKE negotiations. As may have been noticed above, the MIB uses recursion in a similar manner in several different places. In particular, the spdGroupContentsTable, the spdCompoundFilterTable / spdSubfiltersTable combination, and the spdCompoundActionTable / spdSubactionsTable combination can reference themselves. In the case of the spdGroupContentsTable, a row can indicate a rule (i.e., a row in the spdRuleDefinitionTable) or a group (i.e., another set of one or more rows in the spdGroupContentsTable). This way, a group can contain a set of rules and sub-groups. Sub-groups are just other groups defined in the spdGroupContentsTable. There is no inherent MIB limit to the depth of nesting of groups. The spdCompoundFilterTable / spdSubfiltersTable combination and spdCompoundActionTable / spdSubactionsTable combination are designed almost identically, with one being for filters and the other for actions, respectively. The following descriptions for the compound filter tables can be directly applied to the compound action tables. The combination of the tables spdCompoundFilterTable and spdSubfiltersTable allow a user to create a set of filters that can be referenced from any table as a single filter. A row in the spdCompoundFilterTable has the basic configuration information for the compound filter. The index of spdCompoundFilterTable, spdCompFiltname, is also used as a partial index to reference a set of ordered rows in the spdSubfiltersTable. Each row in spdSubfiltersTable points to a row in another filter table. In this way, the set of rows in spdSubFiltersTable with a matching spdCompFiltName, together with the row in spdCompoundFilterTable indexed by spdCompFiltName, create a compound filter. Note that it is possible for a row in the spdSubfiltersTable to point to a row in the spdCompoundFilterTable. This recursion allows the creation of a filter set that includes other filter sets within it. There is no inherent MIB limit to the nesting of compound filters within compound filters. Baer, et al. Standards Track [Page 5]
RFC 4807 IPsec SPD configuration MIB March 2007 5.1. Usage Tutorial In order to use the tables contained in this document, a general understanding of firewall processing is helpful. The processing of the security policy database (SPD) involves applying a set of SPD rules to an interface on a device. The given set of rules to apply to any given interface is defined within the spdEndpointToGroupTable table. This table maps a given interface to a group of rules. In this table, the interface itself is specified using its assigned address. There is also one group of rules per direction (ingress and egress). 5.1.1. Notational Conventions Notes about the following example operations: 1. All the example operations in the following section make use of default values for all columns not listed. The operations and column values given in the examples are the minimal SNMP Varbinds that must be sent to create a row. 2. The example operations are formatted such that a row (i.e., the table's Entry object) is operated on by using the indexes to that row and the column values for that row. 3. Below is a generic example of the notation used in the following section's examples of this MIB's usage. This example indicates that the MIB row to be set is the row with the index values of value1 for index1, and value2 for index2. Within this row, column1 is set to column_value1, and column2 is set to column_value2.: rowEntry(index1 = value1, index2 = value2) = (column1 = column_value1, column2 = column_value2) 4. The below is a specific example of the notation used in the following section's examples of this MIB's usage. This example represents the status column of a row in the IP- MIB::ipAddressTable table being set to deprecated. The index values for this row are IPv4 and 192.0.2.1. The example notation would look like the following: ipAddressEntry(ipAddressAddrType = 1, -- ipv4 ipAddressAddr = 0xC0000201 ) -- 192.0.2.1 = (ipAddressStatus = 2) -- deprecated Baer, et al. Standards Track [Page 6]
RFC 4807 IPsec SPD configuration MIB March 2007 5.1.2. Implementing an Example SPD Policy As an example, let us define the following administrative policy: On the network interface with IP address 192.0.2.1, all traffic from host 192.0.2.6 will be dropped and all other traffic will be accepted. This policy is enforced by setting the values in the MIB to do the following: o create a filter for 192.0.2.6 o create a rule that connects the 192.0.2.6 filter to a packet drop action o create a rule that always accepts packets o group these rules together in the proper order so that the 192.0.2.6 drop rule is checked first. o connect this group of rules to the 192.0.2.1 interface The first step to do this is creating the filter for the IPv4 address 192.0.2.6: SpdIpHeaderFilterEntry(spdIpHeadFiltName = "192.0.2.6") = (spdIpHeadFiltType = 0x80, -- sourceAddress spdIpHeadFiltIPVersion = 1, -- IPv4 spdIpHeadFiltSrcAddressBegin = 0xC0000206, -- 192.0.2.6 spdIpHeadFiltSrcAddressEnd = 0xC0000206, -- 192.0.2.6 spdIpHeadFiltRowStatus = 4) -- createAndGo Next, a rule is created to connect the above "192.0.2.6" filter to an action to "drop" the packet, as follows: spdRuleDefinitionEntry(spdRuleDefName = "drop from 192.0.2.6") = (spdRuleDefFilter = spdIpHeadFiltType.9.49.57.50.46.48.46.50.46.54, spdRuleDefAction = spdDropAction.0, spdRuleDefRowStatus = 4) -- createAndGo Next, a rule is created that accepts all packets: spdRuleDefinitionEntry(spdRuleDefName = "accept all") = (spdRuleDefFilter = spdTrueFilter.0, spdRuleDefAction = spdAcceptAction.0, spdRuleDefRowStatus = 4) -- createAndGo Baer, et al. Standards Track [Page 7]
RFC 4807 IPsec SPD configuration MIB March 2007 Next, these two rules are grouped together. Rule groups attached to an interface are processed one row at a time. The rows are processed from lowest to highest spdGroupContPriority value. Because the row that references the "accept all" rule should be processed last, it is given the higher spdGroupContPriority value. SpdGroupContentsEntry(spdGroupContName = "ingress", spdGroupContPriority = 65535) = (spdGroupContComponentName = "accept all", spdGroupContRowStatus = 4) -- createAndGo SpdGroupContentsEntry(spdGroupContName = "ingress", spdGroupContPriority = 1000) = (spdGroupContComponentName = "drop from 192.0.2.6", spdGroupContRowStatus = 4) -- createAndGo Finally, this group of rules is connected to the 192.0.2.1 interface as follows: SpdEndpointToGroupEntry(spdEndGroupDirection = 1, -- ingress spdEndGroupIdentType = 4, -- IPv4 spdEndGroupAddress = 0xC0000001) = (spdEndGroupName = "ingress", spdEndGroupRowStatus = 4) -- createAndGo This completes the necessary steps to implement the policy. Once all of these rules have been applied, the policy should take effect. 6. MIB Definition The following MIB Module imports from: [RFC2578], [RFC2579], [RFC2580], [RFC2863], [RFC3289], [RFC3411], and [RFC4001]. It also uses definitions from [RFC1108], [RFC3060], and [RFC3629]. IPSEC-SPD-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, Integer32, Unsigned32, mib-2 FROM SNMPv2-SMI -- [RFC2578] TEXTUAL-CONVENTION, RowStatus, TruthValue, TimeStamp, StorageType, VariablePointer FROM SNMPv2-TC -- [RFC2579] Baer, et al. Standards Track [Page 8]
RFC 4807 IPsec SPD configuration MIB March 2007 MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP FROM SNMPv2-CONF -- [RFC2580] InterfaceIndex FROM IF-MIB -- [RFC2863] diffServMIBMultiFieldClfrGroup, IfDirection, diffServMultiFieldClfrNextFree FROM DIFFSERV-MIB -- [RFC3289] InetAddressType, InetAddress FROM INET-ADDRESS-MIB -- [RFC4001] SnmpAdminString FROM SNMP-FRAMEWORK-MIB -- [RFC3411] ; -- -- module identity -- spdMIB MODULE-IDENTITY LAST-UPDATED "200702070000Z" -- 7 February 2007 ORGANIZATION "IETF IP Security Policy Working Group" CONTACT-INFO "Michael Baer P.O. Box 72682 Davis, CA 95617 Phone: +1 530 902 3131 Email: baerm@tislabs.com Ricky Charlet Email: rcharlet@alumni.calpoly.edu Wes Hardaker Sparta, Inc. P.O. Box 382 Davis, CA 95617 Phone: +1 530 792 1913 Email: hardaker@tislabs.com Robert Story Revelstone Software PO Box 1812 Baer, et al. Standards Track [Page 9]
RFC 4807 IPsec SPD configuration MIB March 2007 Tucker, GA 30085 Phone: +1 770 617 3722 Email: rstory@ipsp.revelstone.com Cliff Wang ARO 4300 S. Miami Blvd. Durham, NC 27703 E-Mail: cliffwangmail@yahoo.com" DESCRIPTION "This MIB module defines configuration objects for managing IPsec Security Policies. In general, this MIB can be implemented anywhere IPsec security services exist (e.g., bump-in-the-wire, host, gateway, firewall, router, etc.). Copyright (C) The IETF Trust (2007). This version of this MIB module is part of RFC 4807; see the RFC itself for full legal notices." -- Revision History REVISION "200702070000Z" -- 7 February 2007 DESCRIPTION "Initial version, published as RFC 4807." ::= { mib-2 153 } -- -- groups of related objects -- spdConfigObjects OBJECT IDENTIFIER ::= { spdMIB 1 } spdNotificationObjects OBJECT IDENTIFIER ::= { spdMIB 2 } spdConformanceObjects OBJECT IDENTIFIER ::= { spdMIB 3 } spdActions OBJECT IDENTIFIER ::= { spdMIB 4 } -- -- Textual Conventions -- SpdBooleanOperator ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "The SpdBooleanOperator operator is used to specify whether sub-components in a decision-making process are Baer, et al. Standards Track [Page 10]
RFC 4807 IPsec SPD configuration MIB March 2007 ANDed or ORed together to decide if the resulting expression is true or false." SYNTAX INTEGER { or(1), and(2) } SpdAdminStatus ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "The SpdAdminStatus is used to specify the administrative status of an object. Objects that are disabled MUST NOT be used by the packet processing engine." SYNTAX INTEGER { enabled(1), disabled(2) } SpdIPPacketLogging ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "SpdIPPacketLogging specifies whether an audit message SHOULD be logged if a packet is passed through a Security Association (SA) and if some of that packet is included in the log event. A value of '-1' indicates no logging. A value of '0' or greater indicates that logging SHOULD be done and indicates the number of bytes starting at the beginning of the packet to place in the log. Values greater than the size of the packet being processed indicate that the entire packet SHOULD be sent. Examples: '-1' no logging '0' log but do not include any of the packet in the log '20' log and include the first 20 bytes of the packet in the log." SYNTAX Integer32 (-1..65535) SpdTimePeriod ::= TEXTUAL-CONVENTION DISPLAY-HINT "31t" STATUS current DESCRIPTION "This property identifies an overall range of calendar dates and time. In a boolean context, a value within this time range, inclusive, is considered true. This information is encoded as an octet string using the UTF-8 transformation format described in STD 63, RFC 3629. It uses the format suggested in RFC 3060. An octet string Baer, et al. Standards Track [Page 11]
RFC 4807 IPsec SPD configuration MIB March 2007 represents a start date and time and an end date and time. For example: yyyymmddThhmmss/yyyymmddThhmmss Where: yyyy = year mm = month dd = day hh = hour mm = minute ss = second The first 'yyyymmddThhmmss' sub-string indicates the start date and time. The second 'yyyymmddThhmmss' sub-string indicates the end date and time. The character 'T' within these sub-strings indicates the beginning of the time portion of each sub-string. The solidus character '/' separates the start from the end date and time. The end date and time MUST be subsequent to the start date and time. There are also two allowed substitutes for a 'yyyymmddThhmmss' sub-string: one for the start date and time, and one for the end date and time. If the start date and time are replaced with the string 'THISANDPRIOR', this sub-string would indicate the current date and time and the previous dates and time. If the end date and time are replaced with the string 'THISANDFUTURE', this sub-string would indicate the current date and time and the subsequent dates and time. Any of the following SHOULD be considered a 'wrongValue' error: - Setting a value with the end date and time earlier than or equal to the start date and time. - Setting the start date and time to 'THISANDFUTURE'. - Setting the end date and time to 'THISANDPRIOR'." REFERENCE "RFC 3060, 3269" SYNTAX OCTET STRING (SIZE (0..31)) -- -- Policy group definitions -- spdLocalConfigObjects OBJECT IDENTIFIER ::= { spdConfigObjects 1 } spdIngressPolicyGroupName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(0..32)) MAX-ACCESS read-write STATUS current Baer, et al. Standards Track [Page 12]
RFC 4807 IPsec SPD configuration MIB March 2007 DESCRIPTION "This object indicates the global system policy group that is to be applied on ingress packets (i.e., arriving at an interface from a network) when a given endpoint does not contain a policy definition in the spdEndpointToGroupTable. Its value can be used as an index into the spdGroupContentsTable to retrieve a list of policies. A zero length string indicates that no system-wide policy exists and the default policy of 'drop' SHOULD be executed for ingress packets until one is imposed by either this object or by the endpoint processing a given packet. This object MUST be persistent" DEFVAL { "" } ::= { spdLocalConfigObjects 1 } spdEgressPolicyGroupName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(0..32)) MAX-ACCESS read-write STATUS current DESCRIPTION "This object indicates the policy group containing the global system policy that is to be applied on egress packets (i.e., packets leaving an interface and entering a network) when a given endpoint does not contain a policy definition in the spdEndpointToGroupTable. Its value can be used as an index into the spdGroupContentsTable to retrieve a list of policies. A zero length string indicates that no system-wide policy exists and the default policy of 'drop' SHOULD be executed for egress packets until one is imposed by either this object or by the endpoint processing a given packet. This object MUST be persistent" DEFVAL { "" } ::= { spdLocalConfigObjects 2 } spdEndpointToGroupTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdEndpointToGroupEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table maps policies (groupings) onto an endpoint (interface). A policy group assigned to an endpoint is then used to control access to the network traffic passing through that endpoint. Baer, et al. Standards Track [Page 13]
RFC 4807 IPsec SPD configuration MIB March 2007 If an endpoint has been configured with a policy group and no rule within that policy group matches that packet, the default action in this case SHALL be to drop the packet. If no policy group has been assigned to an endpoint, then the policy group specified by spdIngressPolicyGroupName MUST be used on traffic inbound from the network through that endpoint, and the policy group specified by spdEgressPolicyGroupName MUST be used for traffic outbound to the network through that endpoint." ::= { spdConfigObjects 2 } spdEndpointToGroupEntry OBJECT-TYPE SYNTAX SpdEndpointToGroupEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A mapping assigning a policy group to an endpoint." INDEX { spdEndGroupDirection, spdEndGroupInterface } ::= { spdEndpointToGroupTable 1 } SpdEndpointToGroupEntry ::= SEQUENCE { spdEndGroupDirection IfDirection, spdEndGroupInterface InterfaceIndex, spdEndGroupName SnmpAdminString, spdEndGroupLastChanged TimeStamp, spdEndGroupStorageType StorageType, spdEndGroupRowStatus RowStatus } spdEndGroupDirection OBJECT-TYPE SYNTAX IfDirection MAX-ACCESS not-accessible STATUS current DESCRIPTION "This object indicates which direction of packets crossing the interface are associated with which spdEndGroupName object. Ingress packets, or packets into the device match when this value is inbound(1). Egress packets or packets out of the device match when this value is outbound(2)." ::= { spdEndpointToGroupEntry 1 } spdEndGroupInterface OBJECT-TYPE SYNTAX InterfaceIndex MAX-ACCESS not-accessible STATUS current DESCRIPTION Baer, et al. Standards Track [Page 14]
RFC 4807 IPsec SPD configuration MIB March 2007 "This value matches the IF-MIB's ifTable's ifIndex column and indicates the interface associated with a given endpoint. This object can be used to uniquely identify an endpoint that a set of policy groups are applied to." ::= { spdEndpointToGroupEntry 2 } spdEndGroupName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS read-create STATUS current DESCRIPTION "The policy group name to apply at this endpoint. The value of the spdEndGroupName object is then used as an index into the spdGroupContentsTable to come up with a list of rules that MUST be applied at this endpoint." ::= { spdEndpointToGroupEntry 3 } spdEndGroupLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdEndpointToGroupEntry 4 } spdEndGroupStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdEndpointToGroupEntry 5 } spdEndGroupRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create Baer, et al. Standards Track [Page 15]
RFC 4807 IPsec SPD configuration MIB March 2007 STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. This object is considered 'notReady' and MUST NOT be set to active until one or more active rows exist within the spdGroupContentsTable for the group referenced by the spdEndGroupName object." ::= { spdEndpointToGroupEntry 6 } -- -- policy group definition table -- spdGroupContentsTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdGroupContentsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of rules and/or subgroups contained within a given policy group. For a given value of spdGroupContName, the set of rows sharing that value forms a 'group'. The rows in a group MUST be processed according to the value of the spdGroupContPriority object in each row. The processing MUST be executed starting with the lowest value of spdGroupContPriority and in ascending order thereafter. If an action is executed as the result of the processing of a row in a group, the processing of further rows in that group MUST stop. Iterating to the next policy group row by finding the next largest spdGroupContPriority object SHALL only be done if no actions were run while processing the current row for a given packet." ::= { spdConfigObjects 3 } spdGroupContentsEntry OBJECT-TYPE SYNTAX SpdGroupContentsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Defines a given sub-component within a policy group. A sub-component is either a rule or another group as indicated by spdGroupContComponentType and referenced by spdGroupContComponentName." Baer, et al. Standards Track [Page 16]
RFC 4807 IPsec SPD configuration MIB March 2007 INDEX { spdGroupContName, spdGroupContPriority } ::= { spdGroupContentsTable 1 } SpdGroupContentsEntry ::= SEQUENCE { spdGroupContName SnmpAdminString, spdGroupContPriority Integer32, spdGroupContFilter VariablePointer, spdGroupContComponentType INTEGER, spdGroupContComponentName SnmpAdminString, spdGroupContLastChanged TimeStamp, spdGroupContStorageType StorageType, spdGroupContRowStatus RowStatus } spdGroupContName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The administrative name of the group associated with this row. A 'group' is formed by all the rows in this table that have the same value of this object." ::= { spdGroupContentsEntry 1 } spdGroupContPriority OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The priority (sequence number) of the sub-component in a group that this row represents. This value indicates the order that each row of this table MUST be processed from low to high. For example, a row with a priority of 0 is processed before a row with a priority of 1, a 1 before a 2, etc." ::= { spdGroupContentsEntry 2 } spdGroupContFilter OBJECT-TYPE SYNTAX VariablePointer MAX-ACCESS read-create STATUS current DESCRIPTION "spdGroupContFilter points to a filter that is evaluated to determine whether the spdGroupContComponentName within this row is exercised. Managers can use this object to classify groups of rules, or subgroups, together in order to achieve a greater degree of control and optimization over the execution order of the items within the group. If the Baer, et al. Standards Track [Page 17]
RFC 4807 IPsec SPD configuration MIB March 2007 filter evaluates to false, the rule or subgroup will be skipped and the next rule or subgroup will be evaluated instead. This value can be used to indicate a scalar or row in a table. When indicating a row in a table, this value MUST point to the first column instance in that row. An example usage of this object would be to limit a group of rules to executing only when the IP packet being processed is designated to be processed by IKE. This effectively creates a group of IKE-specific rules. The following tables and scalars can be pointed to by this column. All but diffServMultiFieldClfrTable are defined in this MIB: diffServMultiFieldClfrTable spdIpOffsetFilterTable spdTimeFilterTable spdCompoundFilterTable spdTrueFilter spdIpsoHeaderFilterTable Implementations MAY choose to provide support for other filter tables or scalars. If this column is set to a VariablePointer value, which references a non-existent row in an otherwise supported table, the inconsistentName exception MUST be returned. If the table or scalar pointed to by the VariablePointer is not supported at all, then an inconsistentValue exception MUST be returned. If, during packet processing, a row in this table is applied to a packet and the value of this column in that row references a non-existent or non-supported object, the packet MUST be dropped." REFERENCE "RFC 3289" DEFVAL { spdTrueFilterInstance } ::= { spdGroupContentsEntry 3 } spdGroupContComponentType OBJECT-TYPE SYNTAX INTEGER { group(1), rule(2) } MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates whether the spdGroupContComponentName object is the name of another group defined within the spdGroupContentsTable or is the name of a rule defined Baer, et al. Standards Track [Page 18]
RFC 4807 IPsec SPD configuration MIB March 2007 within the spdRuleDefinitionTable." DEFVAL { rule } ::= { spdGroupContentsEntry 4 } spdGroupContComponentName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS read-create STATUS current DESCRIPTION "The name of the policy rule or subgroup contained within this row, as indicated by the spdGroupContComponentType object." ::= { spdGroupContentsEntry 5 } spdGroupContLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdGroupContentsEntry 6 } spdGroupContStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdGroupContentsEntry 7 } spdGroupContRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. Baer, et al. Standards Track [Page 19]
RFC 4807 IPsec SPD configuration MIB March 2007 The value of this object has no effect on whether other objects in this conceptual row can be modified. This object MUST NOT be set to active until the row to which the spdGroupContComponentName points to exists and is active. If active, this object MUST remain active unless one of the following two conditions are met: I. No active row in spdEndpointToGroupTable exists that references this row's group (i.e., indicate this row's spdGroupContName). II. Or at least one other active row in this table has a matching spdGroupContName. If neither condition is met, an attempt to set this row to something other than active MUST result in an inconsistentValue error." ::= { spdGroupContentsEntry 8 } -- -- policy definition table -- spdRuleDefinitionTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdRuleDefinitionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table defines a rule by associating a filter or a set of filters to an action to be executed." ::= { spdConfigObjects 4 } spdRuleDefinitionEntry OBJECT-TYPE SYNTAX SpdRuleDefinitionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A row defining a particular rule definition. A rule definition binds a filter pointer to an action pointer." INDEX { spdRuleDefName } ::= { spdRuleDefinitionTable 1 } SpdRuleDefinitionEntry ::= SEQUENCE { spdRuleDefName SnmpAdminString, Baer, et al. Standards Track [Page 20]
RFC 4807 IPsec SPD configuration MIB March 2007 spdRuleDefDescription SnmpAdminString, spdRuleDefFilter VariablePointer, spdRuleDefFilterNegated TruthValue, spdRuleDefAction VariablePointer, spdRuleDefAdminStatus SpdAdminStatus, spdRuleDefLastChanged TimeStamp, spdRuleDefStorageType StorageType, spdRuleDefRowStatus RowStatus } spdRuleDefName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "spdRuleDefName is the administratively assigned name of the rule referred to by the spdGroupContComponentName object." ::= { spdRuleDefinitionEntry 1 } spdRuleDefDescription OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-create STATUS current DESCRIPTION "A user defined string. This field MAY be used for administrative tracking purposes." DEFVAL { "" } ::= { spdRuleDefinitionEntry 2 } spdRuleDefFilter OBJECT-TYPE SYNTAX VariablePointer MAX-ACCESS read-create STATUS current DESCRIPTION "spdRuleDefFilter points to a filter that is used to evaluate whether the action associated with this row is executed or not. The action will only execute if the filter referenced by this object evaluates to TRUE after first applying any negation required by the spdRuleDefFilterNegated object. The following tables and scalars can be pointed to by this column. All but diffServMultiFieldClfrTable are defined in this MIB. Implementations MAY choose to provide support for other filter tables or scalars as well: diffServMultiFieldClfrTable Baer, et al. Standards Track [Page 21]
RFC 4807 IPsec SPD configuration MIB March 2007 spdIpOffsetFilterTable spdTimeFilterTable spdCompoundFilterTable spdTrueFilter If this column is set to a VariablePointer value, which references a non-existent row in an otherwise supported table, the inconsistentName exception MUST be returned. If the table or scalar pointed to by the VariablePointer is not supported at all, then an inconsistentValue exception MUST be returned. If, during packet processing, this column has a value that references a non-existent or non-supported object, the packet MUST be dropped." REFERENCE "RFC 3289" ::= { spdRuleDefinitionEntry 3 } spdRuleDefFilterNegated OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "spdRuleDefFilterNegated specifies whether or not the results of the filter referenced by the spdRuleDefFilter object is negated." DEFVAL { false } ::= { spdRuleDefinitionEntry 4 } spdRuleDefAction OBJECT-TYPE SYNTAX VariablePointer MAX-ACCESS read-create STATUS current DESCRIPTION "This column points to the action to be taken. It MAY, but is not limited to, point to a row in one of the following tables: spdCompoundActionTable ipsaSaPreconfiguredActionTable ipiaIkeActionTable ipiaIpsecActionTable It MAY also point to one of the scalar objects beneath spdStaticActions. If this object is set to a pointer to a row in an unsupported (or unknown) table, an inconsistentValue Baer, et al. Standards Track [Page 22]
RFC 4807 IPsec SPD configuration MIB March 2007 error MUST be returned. If this object is set to point to a non-existent row in an otherwise supported table, an inconsistentName error MUST be returned. If, during packet processing, this column has a value that references a non-existent or non-supported object, the packet MUST be dropped." ::= { spdRuleDefinitionEntry 5 } spdRuleDefAdminStatus OBJECT-TYPE SYNTAX SpdAdminStatus MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates whether the current rule definition is considered active. If the value is enabled, the rule MUST be evaluated when processing packets. If the value is disabled, the packet processing MUST continue as if this rule's filter had effectively failed." DEFVAL { enabled } ::= { spdRuleDefinitionEntry 6 } spdRuleDefLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdRuleDefinitionEntry 7 } spdRuleDefStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have Baer, et al. Standards Track [Page 23]
RFC 4807 IPsec SPD configuration MIB March 2007 to be writable." DEFVAL { nonVolatile } ::= { spdRuleDefinitionEntry 8 } spdRuleDefRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. This object MUST NOT be set to active until the containing conditions, filters, and actions have been defined. Once active, it MUST remain active until no active policyGroupContents entries are referencing it. A failed attempt to do so MUST return an inconsistentValue error." ::= { spdRuleDefinitionEntry 9 } -- -- Policy compound filter definition table -- spdCompoundFilterTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdCompoundFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table defining compound filters and their associated parameters. A row in this table can be pointed to by a spdRuleDefFilter object." ::= { spdConfigObjects 5 } spdCompoundFilterEntry OBJECT-TYPE SYNTAX SpdCompoundFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in the spdCompoundFilterTable. Each entry in this table represents a compound filter. A filter defined by this table is considered to have a TRUE return value if and only if: spdCompFiltLogicType is AND and all of the sub-filters associated with it, as defined in the spdSubfiltersTable, are all true themselves (after applying any required Baer, et al. Standards Track [Page 24]
RFC 4807 IPsec SPD configuration MIB March 2007 negation, as defined by the ficFilterIsNegated object). spdCompFiltLogicType is OR and at least one of the sub-filters associated with it, as defined in the spdSubfiltersTable, is true itself (after applying any required negation, as defined by the ficFilterIsNegated object." INDEX { spdCompFiltName } ::= { spdCompoundFilterTable 1 } SpdCompoundFilterEntry ::= SEQUENCE { spdCompFiltName SnmpAdminString, spdCompFiltDescription SnmpAdminString, spdCompFiltLogicType SpdBooleanOperator, spdCompFiltLastChanged TimeStamp, spdCompFiltStorageType StorageType, spdCompFiltRowStatus RowStatus } spdCompFiltName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "A user definable string. This value is used as an index into this table." ::= { spdCompoundFilterEntry 1 } spdCompFiltDescription OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-create STATUS current DESCRIPTION "A user definable string. This field MAY be used for your administrative tracking purposes." DEFVAL { "" } ::= { spdCompoundFilterEntry 2 } spdCompFiltLogicType OBJECT-TYPE SYNTAX SpdBooleanOperator MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates whether the sub-component filters of this compound filter are functionally ANDed or ORed together." DEFVAL { and } ::= { spdCompoundFilterEntry 3 } Baer, et al. Standards Track [Page 25]
RFC 4807 IPsec SPD configuration MIB March 2007 spdCompFiltLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdCompoundFilterEntry 4 } spdCompFiltStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdCompoundFilterEntry 5 } spdCompFiltRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. Once active, it MUST NOT have its value changed if any active rows in the spdRuleDefinitionTable are currently pointing at this row." ::= { spdCompoundFilterEntry 6 } -- -- Policy filters in a cf table -- spdSubfiltersTable OBJECT-TYPE Baer, et al. Standards Track [Page 26]
RFC 4807 IPsec SPD configuration MIB March 2007 SYNTAX SEQUENCE OF SpdSubfiltersEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table defines a list of filters contained within a given compound filter defined in the spdCompoundFilterTable." ::= { spdConfigObjects 6 } spdSubfiltersEntry OBJECT-TYPE SYNTAX SpdSubfiltersEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry in the spdSubfiltersTable. There is an entry in this table for each sub-filter of all compound filters present in the spdCompoundFilterTable." INDEX { spdCompFiltName, spdSubFiltPriority } ::= { spdSubfiltersTable 1 } SpdSubfiltersEntry ::= SEQUENCE { spdSubFiltPriority Integer32, spdSubFiltSubfilter VariablePointer, spdSubFiltSubfilterIsNegated TruthValue, spdSubFiltLastChanged TimeStamp, spdSubFiltStorageType StorageType, spdSubFiltRowStatus RowStatus } spdSubFiltPriority OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The priority of a given filter within a compound filter. The order of execution is from lowest to highest priority value (i.e., priority 0 before priority 1, 1 before 2, etc.). Implementations MAY choose to follow this ordering, as set by the manager that created the rows. This can allow a manager to intelligently construct filter lists such that faster filters are evaluated first." ::= { spdSubfiltersEntry 1 } spdSubFiltSubfilter OBJECT-TYPE SYNTAX VariablePointer MAX-ACCESS read-create STATUS current DESCRIPTION Baer, et al. Standards Track [Page 27]
RFC 4807 IPsec SPD configuration MIB March 2007 "The OID of the contained filter. The value of this object is a VariablePointer that references the filter to be included in this compound filter. The following tables and scalars can be pointed to by this column. All but diffServMultiFieldClfrTable are defined in this MIB. Implementations MAY choose to provide support for other filter tables or scalars as well: diffServMultiFieldClfrTable spdIpsoHeaderFilterTable spdIpOffsetFilterTable spdTimeFilterTable spdCompoundFilterTable spdTrueFilter If this column is set to a VariablePointer value that references a non-existent row in an otherwise supported table, the inconsistentName exception MUST be returned. If the table or scalar pointed to by the VariablePointer is not supported at all, then an inconsistentValue exception MUST be returned. If, during packet processing, this column has a value that references a non-existent or non-supported object, the packet MUST be dropped." REFERENCE "RFC 3289" ::= { spdSubfiltersEntry 2 } spdSubFiltSubfilterIsNegated OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates whether or not the result of applying this sub-filter is negated." DEFVAL { false } ::= { spdSubfiltersEntry 3 } spdSubFiltLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. Baer, et al. Standards Track [Page 28]
RFC 4807 IPsec SPD configuration MIB March 2007 If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdSubfiltersEntry 4 } spdSubFiltStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdSubfiltersEntry 5 } spdSubFiltRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. This object cannot be made active until a filter referenced by the spdSubFiltSubfilter object is both defined and active. An attempt to do so MUST result in an inconsistentValue error. If active, this object MUST remain active unless one of the following two conditions are met: I. No active row in the SpdCompoundFilterTable exists that has a matching spdCompFiltName. II. Or, at least one other active row in this table has a matching spdCompFiltName. If neither condition is met, an attempt to set this row to something other than active MUST result in an inconsistentValue error." ::= { spdSubfiltersEntry 6 } Baer, et al. Standards Track [Page 29]
RFC 4807 IPsec SPD configuration MIB March 2007 -- -- Static Filters -- spdStaticFilters OBJECT IDENTIFIER ::= { spdConfigObjects 7 } spdTrueFilter OBJECT-TYPE SYNTAX Integer32 (1) MAX-ACCESS read-only STATUS current DESCRIPTION "This scalar indicates a (automatic) true result for a filter. That is, this is a filter that is always true; it is useful for adding as a default filter for a default action or a set of actions." ::= { spdStaticFilters 1 } spdTrueFilterInstance OBJECT IDENTIFIER ::= { spdTrueFilter 0 } -- -- Policy IP Offset filter definition table -- spdIpOffsetFilterTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdIpOffsetFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of filter definitions to be used within the spdRuleDefinitionTable or the spdSubfiltersTable. This type of filter is used to compare an administrator specified octet string to the octets at a particular location in a packet." ::= { spdConfigObjects 8 } spdIpOffsetFilterEntry OBJECT-TYPE SYNTAX SpdIpOffsetFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A definition of a particular filter." INDEX { spdIpOffFiltName } ::= { spdIpOffsetFilterTable 1 } Baer, et al. Standards Track [Page 30]
RFC 4807 IPsec SPD configuration MIB March 2007 SpdIpOffsetFilterEntry ::= SEQUENCE { spdIpOffFiltName SnmpAdminString, spdIpOffFiltOffset Unsigned32, spdIpOffFiltType INTEGER, spdIpOffFiltValue OCTET STRING, spdIpOffFiltLastChanged TimeStamp, spdIpOffFiltStorageType StorageType, spdIpOffFiltRowStatus RowStatus } spdIpOffFiltName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The administrative name for this filter." ::= { spdIpOffsetFilterEntry 1 } spdIpOffFiltOffset OBJECT-TYPE SYNTAX Unsigned32 (0..65535) MAX-ACCESS read-create STATUS current DESCRIPTION "This is the byte offset from the front of the entire IP packet where the value or arithmetic comparison is done. A value of '0' indicates the first byte of the packet header. If this value is greater than the length of the packet, the filter represented by this row should be considered to fail." ::= { spdIpOffsetFilterEntry 2 } spdIpOffFiltType OBJECT-TYPE SYNTAX INTEGER { equal(1), notEqual(2), arithmeticLess(3), arithmeticGreaterOrEqual(4), arithmeticGreater(5), arithmeticLessOrEqual(6) } MAX-ACCESS read-create STATUS current DESCRIPTION "This defines the various tests that are used when evaluating a given filter. The various tests definable in this table are as follows: equal: - Tests if the OCTET STRING, 'spdIpOffFiltValue', matches Baer, et al. Standards Track [Page 31]
RFC 4807 IPsec SPD configuration MIB March 2007 a value in the packet starting at the given offset in the packet and comparing the entire OCTET STRING of 'spdIpOffFiltValue'. Any values compared this way are assumed to be unsigned integer values in network byte order of the same length as 'spdIpOffFiltValue'. notEqual: - Tests if the OCTET STRING, 'spdIpOffFiltValue', does not match a value in the packet starting at the given offset in the packet and comparing to the entire OCTET STRING of 'spdIpOffFiltValue'. Any values compared this way are assumed to be unsigned integer values in network byte order of the same length as 'spdIpOffFiltValue'. arithmeticLess: - Tests if the OCTET STRING, 'spdIpOffFiltValue', is arithmetically less than ('<') the value starting at the given offset within the packet. The value in the packet is assumed to be an unsigned integer in network byte order of the same length as 'spdIpOffFiltValue'. arithmeticGreaterOrEqual: - Tests if the OCTET STRING, 'spdIpOffFiltValue', is arithmetically greater than or equal to ('>=') the value starting at the given offset within the packet. The value in the packet is assumed to be an unsigned integer in network byte order of the same length as 'spdIpOffFiltValue'. arithmeticGreater: - Tests if the OCTET STRING, 'spdIpOffFiltValue', is arithmetically greater than ('>') the value starting at the given offset within the packet. The value in the packet is assumed to be an unsigned integer in network byte order of the same length as 'spdIpOffFiltValue'. arithmeticLessOrEqual: - Tests if the OCTET STRING, 'spdIpOffFiltValue', is arithmetically less than or equal to ('<=') the value starting at the given offset within the packet. The value in the packet is assumed to be an unsigned integer in network byte order of the same length as 'spdIpOffFiltValue'." ::= { spdIpOffsetFilterEntry 3 } spdIpOffFiltValue OBJECT-TYPE Baer, et al. Standards Track [Page 32]
RFC 4807 IPsec SPD configuration MIB March 2007 SYNTAX OCTET STRING (SIZE(1..1024)) MAX-ACCESS read-create STATUS current DESCRIPTION "spdIpOffFiltValue is used for match comparisons of a packet at spdIpOffFiltOffset." ::= { spdIpOffsetFilterEntry 4 } spdIpOffFiltLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdIpOffsetFilterEntry 5 } spdIpOffFiltStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdIpOffsetFilterEntry 6 } spdIpOffFiltRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. If active, this object MUST remain active if it is Baer, et al. Standards Track [Page 33]
RFC 4807 IPsec SPD configuration MIB March 2007 referenced by an active row in another table. An attempt to set it to anything other than active while it is referenced by an active row in another table MUST result in an inconsistentValue error." ::= { spdIpOffsetFilterEntry 7 } -- -- Time/scheduling filter table -- spdTimeFilterTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdTimeFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Defines a table of filters that can be used to effectively enable or disable policies based on a valid time range." ::= { spdConfigObjects 9 } spdTimeFilterEntry OBJECT-TYPE SYNTAX SpdTimeFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A row describing a given time frame for which a policy is filtered on to activate or deactivate the rule. If all the column objects in a row are true for the current time, the row evaluates as 'true'. More explicitly, the time matching column objects in a row MUST be logically ANDed together to form the boolean true/false for the row." INDEX { spdTimeFiltName } ::= { spdTimeFilterTable 1 } SpdTimeFilterEntry ::= SEQUENCE { spdTimeFiltName SnmpAdminString, spdTimeFiltPeriod SpdTimePeriod, spdTimeFiltMonthOfYearMask BITS, spdTimeFiltDayOfMonthMask OCTET STRING, spdTimeFiltDayOfWeekMask BITS, spdTimeFiltTimeOfDayMask SpdTimePeriod, spdTimeFiltLastChanged TimeStamp, spdTimeFiltStorageType StorageType, spdTimeFiltRowStatus RowStatus } Baer, et al. Standards Track [Page 34]
RFC 4807 IPsec SPD configuration MIB March 2007 spdTimeFiltName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "An administratively assigned name for this filter." ::= { spdTimeFilterEntry 1 } spdTimeFiltPeriod OBJECT-TYPE SYNTAX SpdTimePeriod MAX-ACCESS read-create STATUS current DESCRIPTION "The valid time period for this filter. This column is considered 'true' if the current time is within the range of this object." DEFVAL { "THISANDPRIOR/THISANDFUTURE" } ::= { spdTimeFilterEntry 2 } spdTimeFiltMonthOfYearMask OBJECT-TYPE SYNTAX BITS { january(0), february(1), march(2), april(3), may(4), june(5), july(6), august(7), september(8), october(9), november(10), december(11) } MAX-ACCESS read-create STATUS current DESCRIPTION "A bit mask that indicates acceptable months of the year. This column evaluates to 'true' if the current month's bit is set." DEFVAL { { january, february, march, april, may, june, july, august, september, october, november, december } } ::= { spdTimeFilterEntry 3 } spdTimeFiltDayOfMonthMask OBJECT-TYPE SYNTAX OCTET STRING (SIZE(8)) MAX-ACCESS read-create STATUS current DESCRIPTION "Defines which days of the month the current time is valid for. It is a sequence of 64 BITS, where each BIT represents a corresponding day of the month in forward or reverse order. Starting from the left-most bit, the first 31 bits identify the day of the month, counting from the beginning of the month. The following 31 bits (bits 32-62) indicate the day of the month, counting from the end of the Baer, et al. Standards Track [Page 35]
RFC 4807 IPsec SPD configuration MIB March 2007 month. For months with fewer than 31 days, the bits that correspond to the non-existent days of that month are ignored (e.g., for non-leap year Februarys, bits 29-31 and 60-62 are ignored). This column evaluates to 'true' if the current day of the month's bit is set. For example, a value of 0X'80 00 00 01 00 00 00 00' indicates that this column evaluates to true on the first and last days of the month. The last two bits in the string MUST be zero." DEFVAL { 'fffffffffffffffe'H } ::= { spdTimeFilterEntry 4 } spdTimeFiltDayOfWeekMask OBJECT-TYPE SYNTAX BITS { sunday(0), monday(1), tuesday(2), wednesday(3), thursday(4), friday(5), saturday(6) } MAX-ACCESS read-create STATUS current DESCRIPTION "A bit mask that defines which days of the week that the current time is valid for. This column evaluates to 'true' if the current day of the week's bit is set." DEFVAL { { monday, tuesday, wednesday, thursday, friday, saturday, sunday } } ::= { spdTimeFilterEntry 5 } spdTimeFiltTimeOfDayMask OBJECT-TYPE SYNTAX SpdTimePeriod MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the start and end time of the day for which this filter evaluates to true. The date portions of the spdTimePeriod TC are ignored for purposes of evaluating this mask, and only the time-specific portions are used. This column evaluates to 'true' if the current time of day is within the range of the start and end times of the day indicated by this object." DEFVAL { "00000000T000000/00000000T240000" } ::= { spdTimeFilterEntry 6 } spdTimeFiltLastChanged OBJECT-TYPE SYNTAX TimeStamp Baer, et al. Standards Track [Page 36]
RFC 4807 IPsec SPD configuration MIB March 2007 MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdTimeFilterEntry 7 } spdTimeFiltStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdTimeFilterEntry 8 } spdTimeFiltRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. If active, this object MUST remain active if it is referenced by an active row in another table. An attempt to set it to anything other than active while it is referenced by an active row in another table MUST result in an inconsistentValue error." ::= { spdTimeFilterEntry 9 } -- -- IPSO protection authority filtering -- Baer, et al. Standards Track [Page 37]
RFC 4807 IPsec SPD configuration MIB March 2007 spdIpsoHeaderFilterTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdIpsoHeaderFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of IPSO header filter definitions to be used within the spdRuleDefinitionTable or the spdSubfiltersTable. IPSO headers and their values are described in RFC 1108." REFERENCE "RFC 1108" ::= { spdConfigObjects 10 } spdIpsoHeaderFilterEntry OBJECT-TYPE SYNTAX SpdIpsoHeaderFilterEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A definition of a particular filter." INDEX { spdIpsoHeadFiltName } ::= { spdIpsoHeaderFilterTable 1 } SpdIpsoHeaderFilterEntry ::= SEQUENCE { spdIpsoHeadFiltName SnmpAdminString, spdIpsoHeadFiltType BITS, spdIpsoHeadFiltClassification INTEGER, spdIpsoHeadFiltProtectionAuth INTEGER, spdIpsoHeadFiltLastChanged TimeStamp, spdIpsoHeadFiltStorageType StorageType, spdIpsoHeadFiltRowStatus RowStatus } spdIpsoHeadFiltName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The administrative name for this filter." ::= { spdIpsoHeaderFilterEntry 1 } spdIpsoHeadFiltType OBJECT-TYPE SYNTAX BITS { classificationLevel(0), protectionAuthority(1) } MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates which of the IPSO header field a packet is filtered on for this row. If this object is set to classification(0), the spdIpsoHeadFiltClassification Baer, et al. Standards Track [Page 38]
RFC 4807 IPsec SPD configuration MIB March 2007 object indicates how the packet is filtered. If this object is set to protectionAuthority(1), the spdIpsoHeadFiltProtectionAuth object indicates how the packet is filtered." ::= { spdIpsoHeaderFilterEntry 2 } spdIpsoHeadFiltClassification OBJECT-TYPE SYNTAX INTEGER { topSecret(61), secret(90), confidential(150), unclassified(171) } MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the IPSO classification header field value that the packet MUST have for this row to evaluate to 'true'. The values of these enumerations are defined by RFC 1108." REFERENCE "RFC 1108" ::= { spdIpsoHeaderFilterEntry 3 } spdIpsoHeadFiltProtectionAuth OBJECT-TYPE SYNTAX INTEGER { genser(0), siopesi(1), sci(2), nsa(3), doe(4) } MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the IPSO protection authority header field value that the packet MUST have for this row to evaluate to 'true'. The values of these enumerations are defined by RFC 1108. Hence the reason the SMIv2 convention of not using 0 in enumerated lists is violated here." REFERENCE "RFC 1108" ::= { spdIpsoHeaderFilterEntry 4 } spdIpsoHeadFiltLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." Baer, et al. Standards Track [Page 39]
RFC 4807 IPsec SPD configuration MIB March 2007 ::= { spdIpsoHeaderFilterEntry 5 } spdIpsoHeadFiltStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdIpsoHeaderFilterEntry 6 } spdIpsoHeadFiltRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. However, this object MUST NOT be set to active if the requirements of the spdIpsoHeadFiltType object are not met. Specifically, if the spdIpsoHeadFiltType bit for classification(0) is set, the spdIpsoHeadFiltClassification column MUST have a valid value for the row status to be set to active. If the spdIpsoHeadFiltType bit for protectionAuthority(1) is set, the spdIpsoHeadFiltProtectionAuth column MUST have a valid value for the row status to be set to active. If active, this object MUST remain active if it is referenced by an active row in another table. An attempt to set it to anything other than active while it is referenced by an active row in another table MUST result in an inconsistentValue error." ::= { spdIpsoHeaderFilterEntry 7 } -- -- compound actions table -- spdCompoundActionTable OBJECT-TYPE Baer, et al. Standards Track [Page 40]
RFC 4807 IPsec SPD configuration MIB March 2007 SYNTAX SEQUENCE OF SpdCompoundActionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Table used to allow multiple actions to be associated with a rule. It uses the spdSubactionsTable to do this. The rows from spdSubactionsTable that are partially indexed by spdCompActName form the set of compound actions to be performed. The spdCompActExecutionStrategy column in this table indicates how those actions are processed." ::= { spdConfigObjects 11 } spdCompoundActionEntry OBJECT-TYPE SYNTAX SpdCompoundActionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A row in the spdCompoundActionTable." INDEX { spdCompActName } ::= { spdCompoundActionTable 1 } SpdCompoundActionEntry ::= SEQUENCE { spdCompActName SnmpAdminString, spdCompActExecutionStrategy INTEGER, spdCompActLastChanged TimeStamp, spdCompActStorageType StorageType, spdCompActRowStatus RowStatus } spdCompActName OBJECT-TYPE SYNTAX SnmpAdminString (SIZE(1..32)) MAX-ACCESS not-accessible STATUS current DESCRIPTION "This is an administratively assigned name of this compound action." ::= { spdCompoundActionEntry 1 } spdCompActExecutionStrategy OBJECT-TYPE SYNTAX INTEGER { doAll(1), doUntilSuccess(2), doUntilFailure(3) } MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates how the sub-actions are executed based on the success of the actions as they finish executing. Baer, et al. Standards Track [Page 41]
RFC 4807 IPsec SPD configuration MIB March 2007 doAll - run each sub-action regardless of the exit status of the previous action. This parent action is always considered to have acted successfully. doUntilSuccess - run each sub-action until one succeeds, at which point stop processing the sub-actions within this parent compound action. If one of the sub-actions did execute successfully, this parent action is also considered to have executed successfully. doUntilFailure - run each sub-action until one fails, at which point stop processing the sub-actions within this compound action. If any sub-action fails, the result of this parent action is considered to have failed." DEFVAL { doUntilSuccess } ::= { spdCompoundActionEntry 2 } spdCompActLastChanged OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdCompoundActionEntry 3 } spdCompActStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } Baer, et al. Standards Track [Page 42]
RFC 4807 IPsec SPD configuration MIB March 2007 ::= { spdCompoundActionEntry 4 } spdCompActRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. Once a row in the spdCompoundActionTable has been made active, this object MUST NOT be set to destroy without first destroying all the contained rows listed in the spdSubactionsTable." ::= { spdCompoundActionEntry 5 } -- -- actions contained within a compound action -- spdSubactionsTable OBJECT-TYPE SYNTAX SEQUENCE OF SpdSubactionsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains a list of the sub-actions within a given compound action. Compound actions executing these actions MUST execute them in series based on the spdSubActPriority value, with the lowest value executing first." ::= { spdConfigObjects 12 } spdSubactionsEntry OBJECT-TYPE SYNTAX SpdSubactionsEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A row containing a reference to a given compound-action sub-action." INDEX { spdCompActName, spdSubActPriority } ::= { spdSubactionsTable 1 } SpdSubactionsEntry ::= SEQUENCE { spdSubActPriority Integer32, spdSubActSubActionName VariablePointer, Baer, et al. Standards Track [Page 43]
RFC 4807 IPsec SPD configuration MIB March 2007 spdSubActLastChanged TimeStamp, spdSubActStorageType StorageType, spdSubActRowStatus RowStatus } spdSubActPriority OBJECT-TYPE SYNTAX Integer32 (0..65535) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The priority of a given sub-action within a compound action. The order in which sub-actions MUST be executed are based on the value from this column, with the lowest numeric value executing first (i.e., priority 0 before priority 1, 1 before 2, etc.)." ::= { spdSubactionsEntry 1 } spdSubActSubActionName OBJECT-TYPE SYNTAX VariablePointer MAX-ACCESS read-create STATUS current DESCRIPTION "This column points to the action to be taken. It MAY, but is not limited to, point to a row in one of the following tables: spdCompoundActionTable - Allowing recursion ipsaSaPreconfiguredActionTable ipiaIkeActionTable ipiaIpsecActionTable It MAY also point to one of the scalar objects beneath spdStaticActions. If this object is set to a pointer to a row in an unsupported (or unknown) table, an inconsistentValue error MUST be returned. If this object is set to point to a non-existent row in an otherwise supported table, an inconsistentName error MUST be returned. If, during packet processing, this column has a value that references a non-existent or non-supported object, the packet MUST be dropped." ::= { spdSubactionsEntry 2 } spdSubActLastChanged OBJECT-TYPE Baer, et al. Standards Track [Page 44]
RFC 4807 IPsec SPD configuration MIB March 2007 SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this row was last modified or created either through SNMP SETs or by some other external means. If this row has not been modified since the last re-initialization of the network management subsystem, this object SHOULD have a zero value." ::= { spdSubactionsEntry 3 } spdSubActStorageType OBJECT-TYPE SYNTAX StorageType MAX-ACCESS read-create STATUS current DESCRIPTION "The storage type for this row. Rows in this table that were created through an external process MAY have a storage type of readOnly or permanent. For a storage type of permanent, none of the columns have to be writable." DEFVAL { nonVolatile } ::= { spdSubactionsEntry 4 } spdSubActRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object indicates the conceptual status of this row. The value of this object has no effect on whether other objects in this conceptual row can be modified. If active, this object MUST remain active unless one of the following two conditions are met. An attempt to set it to anything other than active while the following conditions are not met MUST result in an inconsistentValue error. The two conditions are: I. No active row in the spdCompoundActionTable exists which has a matching spdCompActName. II. Or, at least one other active row in this table has a matching spdCompActName." Baer, et al. Standards Track [Page 45]
RFC 4807 IPsec SPD configuration MIB March 2007 ::= { spdSubactionsEntry 5 } -- -- Static Actions -- -- these are static actions that can be pointed to by the -- spdRuleDefAction or the spdSubActSubActionName objects to -- drop, accept, or reject packets. spdStaticActions OBJECT IDENTIFIER ::= { spdConfigObjects 13 } spdDropAction OBJECT-TYPE SYNTAX Integer32 (1) MAX-ACCESS read-only STATUS current DESCRIPTION "This scalar indicates that a packet MUST be dropped and SHOULD NOT have action/packet logging." ::= { spdStaticActions 1 } spdDropActionLog OBJECT-TYPE SYNTAX Integer32 (1) MAX-ACCESS read-only STATUS current DESCRIPTION "This scalar indicates that a packet MUST be dropped and SHOULD have action/packet logging." ::= { spdStaticActions 2 } spdAcceptAction OBJECT-TYPE SYNTAX Integer32 (1) MAX-ACCESS read-only STATUS current DESCRIPTION "This Scalar indicates that a packet MUST be accepted (pass-through) and SHOULD NOT have action/packet logging." ::= { spdStaticActions 3 } spdAcceptActionLog OBJECT-TYPE SYNTAX Integer32 (1) MAX-ACCESS read-only STATUS current DESCRIPTION "This scalar indicates that a packet MUST be accepted (pass-through) and SHOULD have action/packet logging." ::= { spdStaticActions 4 } Baer, et al. Standards Track [Page 46]
RFC 4807 IPsec SPD configuration MIB March 2007 -- -- -- Notification objects information -- -- spdNotificationVariables OBJECT IDENTIFIER ::= { spdNotificationObjects 1 } spdNotifications OBJECT IDENTIFIER ::= { spdNotificationObjects 0 } spdActionExecuted OBJECT-TYPE SYNTAX VariablePointer MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Points to the action instance that was executed that resulted in the notification being sent." ::= { spdNotificationVariables 1 } spdIPEndpointAddType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Contains the address type for the interface that the notification triggering packet is passing through." ::= { spdNotificationVariables 2 } spdIPEndpointAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Contains the interface address for the interface that the notification triggering packet is passing through. The format of this object is specified by the spdIPEndpointAddType object." ::= { spdNotificationVariables 3 } spdIPSourceType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Contains the source address type of the packet that Baer, et al. Standards Track [Page 47]
RFC 4807 IPsec SPD configuration MIB March 2007 triggered the notification." ::= { spdNotificationVariables 4 } spdIPSourceAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Contains the source address of the packet that triggered the notification. The format of this object is specified by the spdIPSourceType object." ::= { spdNotificationVariables 5 } spdIPDestinationType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Contains the destination address type of the packet that triggered the notification." ::= { spdNotificationVariables 6 } spdIPDestinationAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Contains the destination address of the packet that triggered the notification. The format of this object is specified by the spdIPDestinationType object." ::= { spdNotificationVariables 7 } spdPacketDirection OBJECT-TYPE SYNTAX IfDirection MAX-ACCESS accessible-for-notify STATUS current DESCRIPTION "Indicates if the packet that triggered the action in questions was ingress (inbound) or egress (outbound)." ::= { spdNotificationVariables 8 } spdPacketPart OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..65535)) MAX-ACCESS accessible-for-notify Baer, et al. Standards Track [Page 48]
RFC 4807 IPsec SPD configuration MIB March 2007 STATUS current DESCRIPTION "spdPacketPart is the front part of the full IP packet that triggered this notification. The initial size limit is determined by the smaller of the size, indicated by: I. The value of the object with the TC syntax 'SpdIPPacketLogging' that indicated the packet SHOULD be logged and II. The size of the triggering packet. The final limit is determined by the SNMP packet size when sending the notification. The maximum size that can be included will be the smaller of the initial size, given the above, and the length that will fit in a single SNMP notification packet after the rest of the notification's objects and any other necessary packet data (headers encoding, etc.) have been included in the packet." ::= { spdNotificationVariables 9 } spdActionNotification NOTIFICATION-TYPE OBJECTS { spdActionExecuted, spdIPEndpointAddType, spdIPEndpointAddress, spdIPSourceType, spdIPSourceAddress, spdIPDestinationType, spdIPDestinationAddress, spdPacketDirection } STATUS current DESCRIPTION "Notification that an action was executed by a rule. Only actions with logging enabled will result in this notification getting sent. The object includes the spdActionExecuted object, which will indicate which action was executed within the scope of the rule. Additionally, the spdIPSourceType, spdIPSourceAddress, spdIPDestinationType, and spdIPDestinationAddress objects are included to indicate the packet source and destination of the packet that triggered the action. Finally, the spdIPEndpointAddType, spdIPEndpointAddress, and spdPacketDirection objects indicate which interface the executed action was associated with, and if the packet was ingress or egress through the endpoint. A spdActionNotification SHOULD be limited to a maximum of one notification sent per minute for any action notifications that do not have any other configuration controlling their send rate. Baer, et al. Standards Track [Page 49]
RFC 4807 IPsec SPD configuration MIB March 2007 Note that compound actions with multiple executed sub-actions may result in multiple notifications being sent from a single rule execution." ::= { spdNotifications 1 } spdPacketNotification NOTIFICATION-TYPE OBJECTS { spdActionExecuted, spdIPEndpointAddType, spdIPEndpointAddress, spdIPSourceType, spdIPSourceAddress, spdIPDestinationType, spdIPDestinationAddress, spdPacketDirection, spdPacketPart } STATUS current DESCRIPTION "Notification that a packet passed through a Security Association (SA). Only SAs created by actions with packet logging enabled will result in this notification getting sent. The objects sent MUST include the spdActionExecuted, which will indicate which action was executed within the scope of the rule. Additionally, the spdIPSourceType, spdIPSourceAddress, spdIPDestinationType, and spdIPDestinationAddress objects MUST be included to indicate the packet source and destination of the packet that triggered the action. The spdIPEndpointAddType, spdIPEndpointAddress, and spdPacketDirection objects are included to indicate which endpoint the packet was associated with. Finally, spdPacketPart is included to enable sending a variable sized part of the front of the packet with the size dependent on the value of the object of TC syntax 'SpdIPPacketLogging', which indicated that logging should be done. A spdPacketNotification SHOULD be limited to a maximum of one notification sent per minute for any action notifications that do not have any other configuration controlling their send rate. An action notification SHOULD be limited to a maximum of one notification sent per minute for any action notifications that do not have any other configuration controlling their send rate." ::= { spdNotifications 2 } -- -- -- Conformance information Baer, et al. Standards Track [Page 50]
RFC 4807 IPsec SPD configuration MIB March 2007 -- -- spdCompliances OBJECT IDENTIFIER ::= { spdConformanceObjects 1 } spdGroups OBJECT IDENTIFIER ::= { spdConformanceObjects 2 } -- -- Compliance statements -- -- spdRuleFilterFullCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SNMP entities that include an IPsec MIB implementation with Endpoint, Rules, and filters support. When this MIB is implemented with support for read-create, then such an implementation can claim full compliance. Such devices can then be both monitored and configured with this MIB." MODULE -- This Module MANDATORY-GROUPS { spdEndpointGroup, spdGroupContentsGroup, spdRuleDefinitionGroup, spdStaticFilterGroup, spdStaticActionGroup , diffServMIBMultiFieldClfrGroup } GROUP spdIpsecSystemPolicyNameGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support a system policy group name." GROUP spdCompoundFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support compound filters." GROUP spdIPOffsetFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support IP Offset filters. In general, this SHOULD be supported by a compliant IPsec Baer, et al. Standards Track [Page 51]
RFC 4807 IPsec SPD configuration MIB March 2007 Policy implementation." GROUP spdTimeFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support time filters." GROUP spdIpsoHeaderFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support IPSO Header filters." GROUP spdCompoundActionGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support compound actions." OBJECT spdEndGroupLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdGroupContComponentType SYNTAX INTEGER { rule(2) } DESCRIPTION "Support of the value group(1) is only required for implementations that support Policy Groups within Policy Groups." OBJECT spdGroupContLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdRuleDefLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdCompFiltLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdSubFiltLastChanged MIN-ACCESS not-accessible Baer, et al. Standards Track [Page 52]
RFC 4807 IPsec SPD configuration MIB March 2007 DESCRIPTION "This object not required for compliance." OBJECT spdIpOffFiltLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdTimeFiltLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdIpsoHeadFiltLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdCompActLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT spdSubActLastChanged MIN-ACCESS not-accessible DESCRIPTION "This object not required for compliance." OBJECT diffServMultiFieldClfrNextFree MIN-ACCESS not-accessible DESCRIPTION "This object is not required for compliance." ::= { spdCompliances 1 } spdLoggingCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SNMP entities that support sending notifications when actions are invoked." MODULE -- This Module MANDATORY-GROUPS { spdActionLoggingObjectGroup, spdActionNotificationGroup } ::= { spdCompliances 2 } -- Baer, et al. Standards Track [Page 53]
RFC 4807 IPsec SPD configuration MIB March 2007 -- ReadOnly Compliances -- spdRuleFilterReadOnlyCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SNMP entities that include an IPsec MIB implementation with Endpoint, Rules, and filters support. If this MIB is implemented without support for read-create (i.e., in read-only), it is not in full compliance, but it can claim read-only compliance. Such a device can then be monitored, but cannot be configured with this MIB." MODULE -- This Module MANDATORY-GROUPS { spdEndpointGroup, spdGroupContentsGroup, spdRuleDefinitionGroup, spdStaticFilterGroup, spdStaticActionGroup , diffServMIBMultiFieldClfrGroup } GROUP spdIpsecSystemPolicyNameGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support a system policy group name." GROUP spdCompoundFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support compound filters." GROUP spdIPOffsetFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support IP Offset filters. In general, this SHOULD be supported by a compliant IPsec Policy implementation." GROUP spdTimeFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support time filters." GROUP spdIpsoHeaderFilterGroup DESCRIPTION "This group is mandatory for IPsec Policy Baer, et al. Standards Track [Page 54]
RFC 4807 IPsec SPD configuration MIB March 2007 implementations that support IPSO Header filters." GROUP spdCompoundActionGroup DESCRIPTION "This group is mandatory for IPsec Policy implementations that support compound actions." OBJECT spdCompActExecutionStrategy MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdCompActLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdCompActRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdCompActStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdCompFiltDescription MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdCompFiltLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdCompFiltLogicType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdCompFiltRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdCompFiltStorageType MIN-ACCESS read-only DESCRIPTION Baer, et al. Standards Track [Page 55]
RFC 4807 IPsec SPD configuration MIB March 2007 "Write access is not required." OBJECT spdEgressPolicyGroupName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdEndGroupLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdEndGroupName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdEndGroupRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdEndGroupStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdGroupContComponentName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdGroupContComponentType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdGroupContFilter MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdGroupContLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdGroupContRowStatus MIN-ACCESS read-only DESCRIPTION Baer, et al. Standards Track [Page 56]
RFC 4807 IPsec SPD configuration MIB March 2007 "Write access is not required." OBJECT spdGroupContStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIngressPolicyGroupName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpOffFiltLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdIpOffFiltOffset MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpOffFiltRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpOffFiltStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpOffFiltType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpOffFiltValue MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpsoHeadFiltClassification MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpsoHeadFiltLastChanged DESCRIPTION Baer, et al. Standards Track [Page 57]
RFC 4807 IPsec SPD configuration MIB March 2007 "This object is not required for compliance." OBJECT spdIpsoHeadFiltProtectionAuth MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpsoHeadFiltRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpsoHeadFiltStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdIpsoHeadFiltType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefAction MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefAdminStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefDescription MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefFilter MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefFilterNegated MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefLastChanged Baer, et al. Standards Track [Page 58]
RFC 4807 IPsec SPD configuration MIB March 2007 DESCRIPTION "This object is not required for compliance." OBJECT spdRuleDefRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdRuleDefStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdSubActLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdSubActRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdSubActStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdSubActSubActionName MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdSubFiltLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdSubFiltRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdSubFiltStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdSubFiltSubfilter MIN-ACCESS read-only Baer, et al. Standards Track [Page 59]
RFC 4807 IPsec SPD configuration MIB March 2007 DESCRIPTION "Write access is not required." OBJECT spdSubFiltSubfilterIsNegated MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltDayOfMonthMask MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltDayOfWeekMask MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltLastChanged DESCRIPTION "This object is not required for compliance." OBJECT spdTimeFiltMonthOfYearMask MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltPeriod MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltRowStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltTimeOfDayMask MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT spdTimeFiltStorageType MIN-ACCESS read-only DESCRIPTION "Write access is not required." ::= { spdCompliances 3 } Baer, et al. Standards Track [Page 60]
RFC 4807 IPsec SPD configuration MIB March 2007 -- -- -- Compliance Groups Definitions -- -- -- Endpoint, Rule, Filter Compliance Groups -- spdEndpointGroup OBJECT-GROUP OBJECTS { spdEndGroupName, spdEndGroupLastChanged, spdEndGroupStorageType, spdEndGroupRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy Endpoint Table." ::= { spdGroups 1 } spdGroupContentsGroup OBJECT-GROUP OBJECTS { spdGroupContComponentType, spdGroupContFilter, spdGroupContComponentName, spdGroupContLastChanged, spdGroupContStorageType, spdGroupContRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy Group Contents Table." ::= { spdGroups 2 } spdIpsecSystemPolicyNameGroup OBJECT-GROUP OBJECTS { spdIngressPolicyGroupName, spdEgressPolicyGroupName } STATUS current DESCRIPTION "This group is made up of objects represent the System Policy Group Names." ::= { spdGroups 3} spdRuleDefinitionGroup OBJECT-GROUP OBJECTS { spdRuleDefDescription, spdRuleDefFilter, spdRuleDefFilterNegated, spdRuleDefAction, spdRuleDefAdminStatus, spdRuleDefLastChanged, Baer, et al. Standards Track [Page 61]
RFC 4807 IPsec SPD configuration MIB March 2007 spdRuleDefStorageType, spdRuleDefRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy Rule Definition Table." ::= { spdGroups 4 } spdCompoundFilterGroup OBJECT-GROUP OBJECTS { spdCompFiltDescription, spdCompFiltLogicType, spdCompFiltLastChanged, spdCompFiltStorageType, spdCompFiltRowStatus, spdSubFiltSubfilter, spdSubFiltSubfilterIsNegated, spdSubFiltLastChanged, spdSubFiltStorageType, spdSubFiltRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy Compound Filter Table and Sub-Filter Table Group." ::= { spdGroups 5 } spdStaticFilterGroup OBJECT-GROUP OBJECTS { spdTrueFilter } STATUS current DESCRIPTION "The static filter group. Currently this is just a true filter." ::= { spdGroups 6 } spdIPOffsetFilterGroup OBJECT-GROUP OBJECTS { spdIpOffFiltOffset, spdIpOffFiltType, spdIpOffFiltValue, spdIpOffFiltLastChanged, spdIpOffFiltStorageType, spdIpOffFiltRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy IP Offset Filter Table." ::= { spdGroups 7 } spdTimeFilterGroup OBJECT-GROUP OBJECTS { spdTimeFiltPeriod, spdTimeFiltMonthOfYearMask, spdTimeFiltDayOfMonthMask, spdTimeFiltDayOfWeekMask, spdTimeFiltTimeOfDayMask, Baer, et al. Standards Track [Page 62]
RFC 4807 IPsec SPD configuration MIB March 2007 spdTimeFiltLastChanged, spdTimeFiltStorageType, spdTimeFiltRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy Time Filter Table." ::= { spdGroups 8 } spdIpsoHeaderFilterGroup OBJECT-GROUP OBJECTS { spdIpsoHeadFiltType, spdIpsoHeadFiltClassification, spdIpsoHeadFiltProtectionAuth, spdIpsoHeadFiltLastChanged, spdIpsoHeadFiltStorageType, spdIpsoHeadFiltRowStatus } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy IPSO Header Filter Table." ::= { spdGroups 9 } -- -- action compliance groups -- spdStaticActionGroup OBJECT-GROUP OBJECTS { spdDropAction, spdAcceptAction, spdDropActionLog, spdAcceptActionLog } STATUS current DESCRIPTION "This group is made up of objects from the IPsec Policy Static Actions." ::= { spdGroups 10 } spdCompoundActionGroup OBJECT-GROUP OBJECTS { spdCompActExecutionStrategy, spdCompActLastChanged, spdCompActStorageType, spdCompActRowStatus, spdSubActSubActionName, spdSubActLastChanged, spdSubActStorageType, spdSubActRowStatus } STATUS current DESCRIPTION "The IPsec Policy Compound Action Table and Actions In Baer, et al. Standards Track [Page 63]
RFC 4807 IPsec SPD configuration MIB March 2007 Compound Action Table Group." ::= { spdGroups 11 } spdActionLoggingObjectGroup OBJECT-GROUP OBJECTS { spdActionExecuted, spdIPEndpointAddType, spdIPEndpointAddress, spdIPSourceType, spdIPSourceAddress, spdIPDestinationType, spdIPDestinationAddress, spdPacketDirection, spdPacketPart } STATUS current DESCRIPTION "This group is made up of all the Notification objects for this MIB." ::= { spdGroups 12 } spdActionNotificationGroup NOTIFICATION-GROUP NOTIFICATIONS { spdActionNotification, spdPacketNotification } STATUS current DESCRIPTION "This group is made up of all the Notifications for this MIB." ::= { spdGroups 13 } END Baer, et al. Standards Track [Page 64]
RFC 4807 IPsec SPD configuration MIB March 2007 7. Security Considerations 7.1. Introduction This document defines a MIB module used to configure IPsec policy services. Since IPsec provides network security services, all of its configuration data (e.g., this entire MIB) SHOULD be as secure or more secure than any of the security services IPsec provides. There are two main threats you need to protect against when configuring IPsec devices. 1. Malicious Configuration: This MIB configures network security services. If an attacker has SET access to any part of this MIB, the network security services configured by this MIB SHOULD be considered broken. The network data sent through the associated gateway should no longer be considered as protected by IPsec (i.e., it is no longer confidential or authenticated). Therefore, only the official administrators SHOULD be allowed to configure a device. In other words, administrators' identities SHOULD be authenticated and their access rights checked before they are allowed to do device configuration. The support for SET operations to the SPD MIB in a non-secure environment, without proper protection, will invalidate the security of the network traffic affected by the SPD MIB. 2. Disclosure of Configuration: In general, malicious parties SHOULD NOT be able to read security configuration data while the data is in network transit. An attacker reading the configuration data may be able to find misconfigurations in the MIB that enable attacks to the network or to the configured node. Since this entire MIB is used for security configuration, it is highly RECOMMENDED that only authorized administrators are allowed to view data in this MIB. In particular, malicious users SHOULD be prevented from reading SNMP packets containing this MIB's data. SNMP GET data SHOULD be encrypted when sent across the network. Also, only authorized administrators SHOULD be allowed SNMP GET access to any of the MIB objects. SNMP versions prior to SNMPv3 do not include adequate security. Even if the network itself is secure (e.g., by using IPsec), earlier versions of SNMP have virtually no control as to who on the secure network is allowed to access (i.e., read/change/create/delete) the objects in this MIB module. It is RECOMMENDED that implementers use the security features as provided by the SNMPv3 framework (see [RFC3410], section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy). Baer, et al. Standards Track [Page 65]
RFC 4807 IPsec SPD configuration MIB March 2007 Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an instance of this MIB module is properly configured to give access to the objects only to those principals (users) that have legitimate rights to GET or SET (change/create/delete) them. Therefore, when configuring data in the IPSEC-SPD-MIB, you SHOULD use SNMP version 3. The rest of this discussion assumes the use of SNMPv3. This is a real strength, because it allows administrators the ability to load new IPsec configuration on a device and keep the conversation private and authenticated under the protection of SNMPv3 before any IPsec protections are available. Once initial establishment of IPsec configuration on a device has been achieved, it would be possible to set up IPsec SAs to then also provide security and integrity services to the configuration conversation. This may seem redundant at first, but will be shown to have a use for added privacy protection below. 7.2. Protecting against Unauthenticated Access The current SNMPv3 User Security Model provides for key-based user authentication. Typically, keys are derived from passwords (but are not required to be), and the keys are then used in Hashed Message Authentication Code (HMAC) algorithms (currently, MD5 and SHA-1 HMACs are defined) to authenticate all SNMP data. Each SNMP device keeps a (configured) list of users and keys. Under SNMPv3 user keys may be updated as often as an administrator cares to have users enter new passwords. But Perfect Forward Secrecy for user keys in SNMPv3 is not yet provided by standards track documents, although RFC2786 defines an experimental method of doing so. 7.3. Protecting against Involuntary Disclosure While sending IPsec configuration data to a Policy Enforcement Point (PEP), there are a few critical parameters that MUST NOT be observed by third parties. Specifically, except for public keys, keying information MUST NOT be allowed to be observed by third parties. This includes IKE Pre-Shared Keys and possibly the private key of a public/private key pair for use in a PKI. Were either of those parameters to be known to a third party, they could then impersonate the device to other IKE peers. Aside from those critical parameters, policy administrators have an interest in not divulging any of their policy configuration. Any knowledge about a device's configuration could help an unfriendly party compromise that device. SNMPv3 offers privacy security services, but at the time this document was written, the only standardized encryption algorithm supported by SNMPv3 is the Baer, et al. Standards Track [Page 66]
RFC 4807 IPsec SPD configuration MIB March 2007 DES encryption algorithm. Support for other (stronger) cryptographic algorithms is in the works and may be completed by the time you read this. As of October 2006, there is a stronger standards track algorithm: AES [RFC3826]. When configuring the IPsec policy using this MIB, policy administrators SHOULD use a privacy security service that is at least as strong as the desired IPsec policy, e.g., If an administrator were to use this MIB to configure an IPsec connection that utilizes a AES algorithms, the SNMP communication configuring the connection SHOULD be protected by an algorithm as strong or stronger than the AES algorithm. 7.4. Bootstrapping Your Configuration Most vendors will not ship new products with a default SNMPv3 user/ password pair, but it is possible. If a device does ship with a default user/password pair, policy administrators SHOULD either change the password or configure a new user, deleting the default user (or, at a minimum, restrict the access of the default user). Most SNMPv3 distributions should, hopefully, require an out-of-band initialization over a trusted medium, such as a local console connection. 8. IANA Considerations Only two IANA considerations exist for this document. The first is just the node number allocation of the IPSEC-SPD-MIB itself within the MIB-2 tree. This is listed in the MIB definition in Section 6. The IPSEC-SPD-MIB also allows for extension action MIBs. Although additional actions are not required to use it, the node spdActions is allocated as a subtree under which IANA can assign additional actions. The second IANA consideration is that IANA would be responsible for creating a new subregistry for and assigning nodes under the spdActions subtree. This tree should have a prefix of iso.org.dod.internet.mgmt.mib-2.spdMIB.spdActions and be listed similar to the following: Decimal Name Description References ------- ---- ----------- ---------- A documented specification is required in order to assign a number. The action and it's meaning can be specified in an RFC or in another publicly available reference. The specification should have sufficient detail that interoperability between independent implementations is possible. The product of the IETF or of another standards body is acceptable or an assignment can be accepted under Baer, et al. Standards Track [Page 67]
RFC 4807 IPsec SPD configuration MIB March 2007 the advice of a "designated expert". (contact IANA for the current expert) 9. Acknowledgments Many people contributed thoughts and ideas that influenced this MIB module. Some special thanks are in order to the following people: Lindy Foster (Sparta, Inc.) John Gillis (ADC) Roger Hartmuller (Sparta, Inc.) Harrie Hazewinkel Jamie Jason (Intel Corporation) David Partain (Ericsson) Lee Rafalow (IBM) Jon Saperia (JDS Consulting) Eric Vyncke (Cisco Systems) 10. References 10.1. Normative References [RFC1108] Kent, S., "U.S. Department of Defense Security Options for the Internet Protocol", RFC 1108, November 1991. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2401] Kent, S. and R. Atkinson, "Security Architecture for the Internet Protocol", RFC 2401, November 1998. [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB", RFC 2863, June 2000. Baer, et al. Standards Track [Page 68]
RFC 4807 IPsec SPD configuration MIB March 2007 [RFC3060] Moore, B., Ellesson, E., Strassner, J., and A. Westerinen, "Policy Core Information Model -- Version 1 Specification", RFC 3060, February 2001. [RFC3289] Baker, F., Chan, K., and A. Smith, "Management Information Base for the Differentiated Services Architecture", RFC 3289, May 2002. [RFC3411] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks", STD 62, RFC 3411, December 2002. [RFC3585] Jason, J., Rafalow, L., and E. Vyncke, "IPsec Configuration Policy Information Model", RFC 3585, August 2003. [RFC3629] Yergeau, F., "UTF-8, a transformation format of ISO 10646", STD 63, RFC 3629, November 2003. [RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", RFC 4001, February 2005. [RFC4301] Kent, S. and K. Seo, "Security Architecture for the Internet Protocol", RFC 4301, December 2005. 10.2. Informative References [IPsec-ACTION] Baer, M., Charlet, R., Hardaker, W., Story, R., and C. Wang, "IPsec Security Policy IPsec Action MIB", Work in Progress, October 2006. [IKE-ACTION] Baer, M., Charlet, R., Hardaker, W., Story, R., and C. Wang, "IPsec Security Policy IKE Action MIB", Work in Progress, October 2006. [IPPMWP] Lortz, V. and L. Rafalow, "IPsec Policy Model White Paper", November 2000. [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet-Standard Management Framework", RFC 3410, December 2002. Baer, et al. Standards Track [Page 69]
RFC 4807 IPsec SPD configuration MIB March 2007 [RFC3826] Blumenthal, U., Maino, F., and K. McCloghrie, "The Advanced Encryption Standard (AES) Cipher Algorithm in the SNMP User-based Security Model", RFC 3826, June 2004. Authors' Addresses Michael Baer Sparta, Inc. P.O. Box 72682 Davis, CA 95617 US EMail: baerm@tislabs.com Ricky Charlet Self EMail: rcharlet@alumni.calpoly.edu Wes Hardaker Sparta, Inc. P.O. Box 382 Davis, CA 95617 US Phone: +1 530 792 1913 EMail: hardaker@tislabs.com Robert Story Revelstone Software PO Box 1812 Tucker, GA 30085 US EMail: rstory@ipsp.revelstone.com Cliff Wang ARO 4300 S. Miami Blvd Durham, NC 27703 US EMail: cliffwangmail@yahoo.com Baer, et al. Standards Track [Page 70]
RFC 4807 IPsec SPD configuration MIB March 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Acknowledgement Funding for the RFC Editor function is currently provided by the Internet Society. Baer, et al. Standards Track [Page 71]