[8706] in bugtraq
Re: about the ip header id
daemon@ATHENA.MIT.EDU (Vern Paxson)
Tue Dec 15 10:57:45 1998
Date: Mon, 14 Dec 1998 21:39:30 PST
Reply-To: Bugtraq List <BUGTRAQ@NETSPACE.ORG>
From: Vern Paxson <vern@EE.LBL.GOV>
To: BUGTRAQ@NETSPACE.ORG
In-Reply-To: Your message of Mon, 14 Dec 1998 12:03:16 PST.
(Note, this hack has been known to Internet measurement folks for a while.)
> - randomize the id in the same way of tcp seq number
> (but without repetitions, I have an idea for a fast
> algorithm that may perform this work)
A shuffling algorithm can do this using a single pass through an array.
> - use distinct counters for each dest ip.
> (I don't think it's such so good idea)
Yep, Solaris does that, maybe some others too.
> p.s. does somebody know why win* ip stack increase its id by 256?
> this solution can prevent the problem but may create others.
It's doing the increment little-endian instead of big-endian.
Vern
