[7868] in bugtraq

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Re: Borderware predictable initial TCP

daemon@ATHENA.MIT.EDU (Aggelos P. Varvitsiotis)
Thu Sep 3 14:13:41 1998

Date: 	Thu, 3 Sep 1998 12:14:56 +0300
Reply-To: "Aggelos P. Varvitsiotis" <avarvit@CC.ECE.NTUA.GR>
From: "Aggelos P. Varvitsiotis" <avarvit@CC.ECE.NTUA.GR>
X-To:         racer-x@ALTAVISTA.NET
To: BUGTRAQ@NETSPACE.ORG
In-Reply-To:  <199809021716.NAA01102@web03.iname.net> from
              "racer-x@ALTAVISTA.NET" at Sep 2, 98 01:16:21 pm

> AFAIK, this problem is not a Firewall-1 problem but a HP-UX problem.
>
> Please respond to Gigi Sullivan <sullivan@SECLAB.COM>
> To:     BUGTRAQ@NETSPACE.ORG
> Subject:        Re: Borderware predictable initial TCP sequence numbers
>
> Hello there,
>
> This can be applied also to Firewall-1 (CheckPoint) running on an
> HP-UX 10.X series.
>
>
> bye bye
>
>
> *************************************************
> Racer X
>
> (Unknown to Speed, Racer X is actually his older
> brother Rex, who ran away from home years ago)
> racer-x@altavista.net
> *************************************************
> --------------------------------------------------------------------------------
>  -------------------------------\r\nGet your free email from altavista.iname.com
>

Fix for HP-UX 9.X (this has been around for quite some time):

        echo "tcp_random_seq/W 2" | /usr/bin/adb -w /hp-ux /dev/kmem

There is a similar fix for 10.X floating around, for whom may
be interested to look for it.


a.varvitsiotis@iccs.ntua.gr                     A.Varvitsiotis
                                             ICCS Computer Center
                                      National Technical University of Athens

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