A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Problems with Max-Forwards Processing (and Potential Solutions)
Author(s) : S. Lawrence, et al.
Filename : draft-lawrence-maxforward-problems-00.txt
Pages :
Date : 2005-10-18
This document describes an attack against SIP networks where a small
number of legitimate, even authorized, SIP requests can stimulate
massive amounts of proxy-to-proxy traffic. The document analysis
ways to limit the impact of this kind of attack, and proposes changes
to the SIP protocol to help mitigate the risk. The document also
proposes ways to improve diagnosis of failures caused by the hop
limit being reached.
The purpose of this document is to stimulate discussion of the
identified problem and proposed solutions. Much of the proposed
solution language appears normative, but implementors should not
treat the current document as such.
Comments are solicited, and should be directed to the SIPPING working
group list at 'sipping@ietf.org'.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-lawrence-maxforward-problems-00.txt
To remove yourself from the I-D Announcement list, send a message to
i-d-announce-request@ietf.org with the word unsubscribe in the body of the message.
You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce
to change your subscription settings.
Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
"get draft-lawrence-maxforward-problems-00.txt".
A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
Internet-Drafts can also be obtained by e-mail.
Send a message to:
mailserv@ietf.org.
In the body type:
"FILE /internet-drafts/draft-lawrence-maxforward-problems-00.txt".
NOTE: The mail server at ietf.org can return the document in
MIME-encoded form by using the "mpack" utility. To use this
feature, insert the command "ENCODING mime" before the "FILE"
command. To decode the response(s), you will need "munpack" or
a MIME-compliant mail reader. Different MIME-compliant mail readers
exhibit different behavior, especially when dealing with
"multipart" MIME messages (i.e. documents which have been split
up into multiple messages), so check your local documentation on
how to manipulate these messages.
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-lawrence-maxforward-problems-00.txt>
-
_______________________________________________
I-D-Announce@ietf.org
https://www1.ietf.org/mailman/listinfo/i-d-announce
