A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Reassign Port Number option for TCP
Author(s) : T. Shepard
Filename : draft-shepard-tcp-reassign-port-number-00.txt
Pages : 6
Date : 2004-7-13
Most TCP connections are protected from spoofing attacks from off-
path attackers by their obscurity. This memo suggests that the few
TCP connections that aren't so protected today may be protected by
making them obscure by using random values for both port numbers.
The obvious difficulty with this approach is that the well-known port
number is required on the initial SYN to connect to the desired
service. A TCP option is proposed which can be used during the SYN
and SYN-ACK exchange to request (and accomplish) reassignment of the
well known port number to a random value.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-shepard-tcp-reassign-port-number-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-shepard-tcp-reassign-port-number-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-shepard-tcp-reassign-port-number-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-shepard-tcp-reassign-port-number-00.txt>
-
_______________________________________________
I-D-Announce@ietf.org
https://www1.ietf.org/mailman/listinfo/i-d-announce
