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From: sam at (Sam Baskinger)
Subject: defense against session hijacking

Somewhat related, SCTP is a multi homed transport protocol.  If it find
a home in webapps, using IPs as IDs becomes harder. :-)


On Mon, 2003-11-17 at 16:16, Thomas M. Duffey wrote:
> Hash: SHA1
> Hi All,
> Sorry if this is common knowledge or regularly discussed; I'm fairly
> new to the list.  I see quite a few messages on this and other
> security lists about session hijacking in Web applications.  Isn't it
> good defense for a programmer to store the IP address of the client
> when the session is initiated, and then compare that address against
> the client for each subsequent request, destroying the session if the
> address changes?  Do many programmers really overlook this simple
> method to protect against such an attack?  It's not perfect but should
> significantly increase the difficulty of such an attack with little or
> no annoying side effects for the legitimate user.  Would it be useful
> to extend the session modules of the common Web scripting languages
> (e.g. PHP) to enable an IP address check by default?
> Best Regards,
> - --
> :: t  h  o  m  a  s       d  u  f  f  e  y
> :: h o m e b o y z   i n t e r a c t i v e
> Version: GnuPG v1.2.2 (GNU/Linux)
> Comment: Using GnuPG with Thunderbird -
> =9f2R
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