[39803] in bugtraq
Re: (ICMP attacks against TCP) (was Re: HPSBUX01137 SSRT5954
daemon@ATHENA.MIT.EDU (Casper.Dik@Sun.COM)
Thu Jul 21 20:15:00 2005
Message-Id: <200507211717.j6LHHFDk001899@vaticaan.Holland.Sun.COM>
From: Casper.Dik@Sun.COM
To: Darren Reed <avalon@caligula.anu.edu.au>
Cc: fernando@frh.utn.edu.ar (Fernando Gont),
secure@hpchs.cup.hp.com (Security Alert), bugtraq@securityfocus.com,
full-disclosure@lists.grok.org.uk
In-Reply-To: <200507210550.j6L5o3tR025736@caligula.anu.edu.au>
Date: Thu, 21 Jul 2005 19:17:15 +0200
>> There are still some radio links with MTUs of 296 bytes.
>
>Go search with google....people still actively use smaller MTUs.
>
>What do you do? Where do you draw the line in the sand?
Well, the minimum requirement for "you must be able to reassemble this"
is 576; so you use PMTU until you go as low as 576 at which point you
stop using the DF bit.
Casper
