From: Gary Howland <gary@kampai.euronet.nl>
Date: Tue, 12 Mar 1996 21:39:54 +0800
To: cypherpunks@toad.com
Subject: Re: FCC & Internet phones
Message-ID: <199603121049.FAA20806@bb.hks.net>
MIME-Version: 1.0
Content-Type: text/plain


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Adam Shostack wrote:
> Loren James Rittle wrote:
> | >Most
> | >presumably use a mix of a UDP data connection and tcp for control
> | >functions.
> |
> | OK, everything after the IP header is encrypted.  I don't even know
> | which protocol is in use.
> 
>         Are you willing to play Mallet?  Drop IP packets, and look for
> duplicates.  Those are TCP.  (IPSEC might handle this, but I bet there
> will be broken implementations that save time by resending.)

Are you saying UDP protocols don't retransmit un-acked packets?
If not, then you can't be sure the duplicates are TCP.


Gary
- --
pub  1024/C001D00D 1996/01/22  Gary Howland <gary@kampai.euronet.nl>
Key fingerprint =  0C FB 60 61 4D 3B 24 7D  1C 89 1D BE 1F EE 09 06 

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