Signed Syslog Messages
RFC 5848
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RFC - Proposed Standard
(May 2010; No errata)
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2015-10-14
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RFC 5848 (Proposed Standard)
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Internet Engineering Task Force (IETF) J. Kelsey
Request for Comments: 5848 NIST
Category: Standards Track J. Callas
ISSN: 2070-1721 PGP Corporation
A. Clemm
Cisco Systems
May 2010
Signed Syslog Messages
Abstract
This document describes a mechanism to add origin authentication,
message integrity, replay resistance, message sequencing, and
detection of missing messages to the transmitted syslog messages.
This specification is intended to be used in conjunction with the
work defined in RFC 5424, "The Syslog Protocol".
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc5848.
Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Kelsey, et al. Standards Track [Page 1]
RFC 5848 Signed Syslog Messages May 2010
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions Used in This Document . . . . . . . . . . . . . . 5
3. Syslog Message Format . . . . . . . . . . . . . . . . . . . . 5
4. Signature Blocks . . . . . . . . . . . . . . . . . . . . . . . 6
4.1. Syslog Messages Containing a Signature Block . . . . . . . 7
4.2. Signature Block Format and Fields . . . . . . . . . . . . 7
4.2.1. Version . . . . . . . . . . . . . . . . . . . . . . . 9
4.2.2. Reboot Session ID . . . . . . . . . . . . . . . . . . 10
4.2.3. Signature Group and Signature Priority . . . . . . . . 10
4.2.4. Global Block Counter . . . . . . . . . . . . . . . . . 13
4.2.5. First Message Number . . . . . . . . . . . . . . . . . 13
4.2.6. Count . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.7. Hash Block . . . . . . . . . . . . . . . . . . . . . . 14
4.2.8. Signature . . . . . . . . . . . . . . . . . . . . . . 14
4.2.9. Example . . . . . . . . . . . . . . . . . . . . . . . 15
5. Payload and Certificate Blocks . . . . . . . . . . . . . . . . 15
5.1. Preliminaries: Key Management and Distribution Issues . . 15
5.2. Payload Block . . . . . . . . . . . . . . . . . . . . . . 16
5.2.1. Block Format and Fields . . . . . . . . . . . . . . . 16
5.2.2. Signer Authentication and Authorization . . . . . . . 18
5.3. Certificate Block . . . . . . . . . . . . . . . . . . . . 19
5.3.1. Syslog Messages Containing a Certificate Block . . . . 19
5.3.2. Certificate Block Format and Fields . . . . . . . . . 20
6. Redundancy and Flexibility . . . . . . . . . . . . . . . . . . 24
6.1. Configuration Parameters . . . . . . . . . . . . . . . . . 24
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