RE: Port numbers and IPv6 (was: I-D ACTION:draft-klensin-iana-reg-policy-00.txt)

["Hallam-Baker, Phillip" <pbaker at verisign.com>]

> From: Jeffrey Hutzelman [mailto:jhutz at cmu.edu] 

> On Friday, July 15, 2005 11:48:28 AM -0700 "Hallam-Baker, Phillip" 
> <pbaker at verisign.com> wrote:

> Agree, for the most part.  Fixed port numbers do have some 
> operational 
> advantages, though...

They certainly have operational advantages for managers of firewalls
that don't have the ability to perform filtering that is any more
specific.

And this had led protocol designers to run every new protocol over port
80 using the firewall bypass protocol HTTP.


One nice feature of using DNS is that it means that you can perform a
lot of control through the signalling channel alone. 


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