A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : Discovering, Querying, and Controlling Firewalls and NATs using STUN
Author(s) : D. Wing, et al.
Filename : draft-wing-behave-nat-control-stun-usage-03.txt
Pages : 27
Date : 2007-7-10
Simple Traversal Underneath NAT (STUN) is a mechanism for traversing
NATs. STUN requests are transmitted through a NAT to external STUN
servers. While this works very well, its two primary drawbacks are
the inability to modify the properties of a NAT binding and the need
to query a public STUN server for every new NAT binding (e.g., every
phone call). These drawbacks require frequent messages which present a load on servers (like SIP servers and STUN servers) and are bad for
low speed access networks, such as cellular access.
This document describes two mechanisms to discover NATs and firewalls
and a mechanism to query and control them. With these mechanisms,
binding discovery and keepalive traffic can be reduced to involve
only the necessary NATs or firewalls. At the same time, backwards
compatibility with NATs and firewalls that do not support this
document is retained, which allows for incremental deployment of
these mechanisms.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-wing-behave-nat-control-stun-usage-03.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-wing-behave-nat-control-stun-usage-03.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-wing-behave-nat-control-stun-usage-03.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-wing-behave-nat-control-stun-usage-03.txt>
-
_______________________________________________
I-D-Announce@ietf.org
https://www1.ietf.org/mailman/listinfo/i-d-announce
