The Common Log Format (CLF) for the Session Initiation Protocol (SIP): Framework and Information Model
RFC 6872
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RFC - Proposed Standard
(February 2013; No errata)
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Last updated |
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2015-10-14
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draft-gurbani-sipclf-problem-statement
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IETF
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Document shepherd |
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Peter Musgrave
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Shepherd write-up |
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(last changed 2012-12-03)
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IESG state |
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RFC 6872 (Proposed Standard)
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Unknown
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Robert Sparks
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Peter Musgrave (musgravepj@gmail.com) is the document shepherd.
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Internet Engineering Task Force (IETF) V. Gurbani, Ed.
Request for Comments: 6872 Bell Laboratories, Alcatel-Lucent
Category: Standards Track E. Burger, Ed.
ISSN: 2070-1721 Georgetown University
T. Anjali
Illinois Institute of Technology
H. Abdelnur
O. Festor
INRIA
February 2013
The Common Log Format (CLF) for the Session Initiation Protocol (SIP):
Framework and Information Model
Abstract
Well-known web servers such as Apache and web proxies like Squid
support event logging using a common log format. The logs produced
using these de facto standard formats are invaluable to system
administrators for troubleshooting a server and tool writers to craft
tools that mine the log files and produce reports and trends.
Furthermore, these log files can also be used to train anomaly
detection systems and feed events into a security event management
system. The Session Initiation Protocol (SIP) does not have a common
log format, and, as a result, each server supports a distinct log
format that makes it unnecessarily complex to produce tools to do
trend analysis and security detection. This document describes a
framework, including requirements and analysis of existing
approaches, and specifies an information model for development of a
SIP common log file format that can be used uniformly by user agents,
proxies, registrars, and redirect servers as well as back-to-back
user agents.
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/rfc6872.
Gurbani, et al. Standards Track [Page 1]
RFC 6872 SIP CLF February 2013
Copyright Notice
Copyright (c) 2013 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.
Table of Contents
1. Introduction ....................................................3
2. Terminology .....................................................4
3. Problem Statement ...............................................4
4. What SIP CLF Is and What It Is Not ..............................5
5. Alternative Approaches to SIP CLF ...............................5
5.1. SIP CLF and Call Detail Records ............................6
5.2. SIP CLF and Packet Capture Tools ...........................6
5.3. SIP CLF and Syslog .........................................7
5.4. SIP CLF and IPFIX ..........................................8
6. Motivation and Use Cases ........................................8
7. Challenges in Establishing a SIP CLF ...........................10
8. Information Model ..............................................11
8.1. SIP CLF Mandatory Fields ..................................11
8.2. Mandatory Fields and SIP Entities .........................13
9. Examples .......................................................14
9.1. UAC Registration ..........................................15
9.2. Direct Call between Alice and Bob .........................17
9.3. Single Downstream Branch Call .............................20
9.4. Forked Call ...............................................25
10. Security Considerations .......................................35
11. Operational Guidance ..........................................37
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