From: David Cannings <lists@edeca.net>
To: netfilter@lists.netfilter.org
Subject: Re: INCOMPLETE [ 8bytes] with two src addresses!
Date: Fri, 27 Feb 2004 19:33:01 +0000 [thread overview]
Message-ID: <200402271933.01977.lists@edeca.net> (raw)
In-Reply-To: <1077909472.2526.54.camel@anduril.intranet.cartel-securite.net>
On Friday 27 February 2004 19:17, Cedric Blancher wrote:
> Le ven 27/02/2004 à 19:41, Alexis a écrit :
> > in traceroute ttl=1 is only for the first packet (thats what i said
> > about the first step)
>
> Yep, but...
> The router which has raised the TTL exceeded error always receive the
> packet with TTL=1. So, when you get an ICMP TTL exceeded, the TTL in
> the citation is always 1 (well, should be).
Unless the router is decrementing the TTL field by more than 1 for each
packet. For example, if it decrements by 5 and it receives any packet
with a TTL <= 4, it will raise TTL exceeded.
I believe this is possible, but most likely not common.
David
next prev parent reply other threads:[~2004-02-27 19:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-27 17:56 INCOMPLETE [ 8bytes] with two src addresses! Graham Swallow
2004-02-27 18:10 ` Alexis
2004-02-27 18:22 ` Cedric Blancher
2004-02-27 18:41 ` Alexis
2004-02-27 19:17 ` Cedric Blancher
2004-02-27 19:33 ` David Cannings [this message]
2004-02-27 18:15 ` Cedric Blancher
2004-02-27 19:05 ` INCOMPLETE [ 8bytes] with two src addresses! Faked Packet? Graham Swallow
2004-02-29 9:17 ` Strange log info from iptables ? Bo Jacobsen
2004-02-29 10:31 ` Antony Stone
2004-02-29 11:09 ` Cedric Blancher
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