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Re: [Tsvwg] Re: [tcpm] Revision ofdraft-larsen-tsvwg-port-randomization

Joe Touch <touch@ISI.EDU> Thu, 26 July 2007 18:59 UTC

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Date: Thu, 26 Jul 2007 11:59:22 -0700
From: Joe Touch <touch@ISI.EDU>
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To: "Anantha Ramaiah (ananth)" <ananth@cisco.com>
Subject: Re: [Tsvwg] Re: [tcpm] Revision ofdraft-larsen-tsvwg-port-randomization
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Anantha Ramaiah (ananth) wrote:
> Murari,
...
> - or do it in piecemeal, first buy more TCP option space, standardize
> any one of the proposals for extending the TCP option space. Then have
> an extended port option like yu suggest below. Then think about other
> TCP fields requiring extension.

The problem is that buying more option space is equivalent to requiring
a whole new TCP header - it has the same problems with backward
compatibility. Previous attempts explored this space, and I think this
was Mark's motivation for a doubled-field TCP header.

Joe

-- 
----------------------------------------------------------------------
Joe Touch                Sr. Network Engineer, USAF TSAT Space Segment
               Postel Center Director & Research Assoc. Prof., USC/ISI


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