R: R: R: [Sip] a question about IETF draft location conveyance 09

I know. 
May be SHOULD NOT instead MUST NOT could be better.

daniel

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       Daniel  Grotti
D.E.I.S. - University of Bologna
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       Via Venezia, 52
  47023 Cesena (FC) - ITALY
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e-mail: daniel.grotti@unibo.it
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-----Messaggio originale-----
Da: Dean Willis [mailto:dean.willis@softarmor.com]
Inviato: sab 24/11/2007 2.32
A: daniel grotti
Cc: Hannes Tschofenig; IETF SIP List; James M. Polk
Oggetto: Re: R: R: [Sip] a question about IETF draft location conveyance 09

On Nov 22, 2007, at 12:08 PM, daniel grotti wrote:

> Hi all,
> so why don't emphasize this point in the next draft, saying :  
> "Proxy server MUST not read messages with "recipient=endpoint"  
> paramenter setted".
> This is my point of you.
>
>

because from a security standpoint, this prohibition is meaningless.  
Intermediate nodes can and will read anything that's in plaintext,  
and SOMEBODY will come up with a rationale, in some context or  
another, for doing so.

And has been pointed out, doing so does not appear to create a  
compatibility problem. It doesn't break the protocol. It might defeat  
security-through-obscurity. It might be rude, or otherwise socially  
unacceptable. But those don't qualify for a MUST level protocol  
prohibition.

--
Dean

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