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Re: [tcpm] TCP-AO review comments.

Stefanos Harhalakis <v13@v13.gr> Sat, 23 August 2008 12:11 UTC

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From: Stefanos Harhalakis <v13@v13.gr>
To: Joe Touch <touch@isi.edu>
Date: Sat, 23 Aug 2008 15:11:09 +0300
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Cc: tcpm@ietf.org, "Anantha Ramaiah (ananth)" <ananth@cisco.com>
Subject: Re: [tcpm] TCP-AO review comments.
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Hello again after 12 days,

On Monday 11 August 2008, Joe Touch wrote:
> | that it supports. Since this isn't possible with limited TCP options
> | space and SYN-cookies issues, something different is required
> | (versioning).
> |
> | Do you see another (better) long-term solution?
>
> Overall, since they keys and parameters need to be configured on a
> per-endpoint-pair basis anyway, IMO this sort of handshake ought to
> occur in the KMS, not in TCP. TCP's SYN option space is insufficient to
> contain multiple authentication fields, AFAICT, in addition to the other
> fields currently commonly in use.

  After rereading the draft and rethinking the conversation, I (finally) agree 
with you. Indeed everything is as you stated above. Since by definition any 
handshake will occur out-of-band in KMS, any different behaviour will require 
another KIND.
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