Re: Guidance needed on well known ports

[Joe Touch <touch at isi.edu>]

Steven M. Bellovin wrote:
> On Mon, 20 Mar 2006 12:47:46 -0500 (EST), jnc at mercury.lcs.mit.edu (Noel
> Chiappa) wrote:
> 
>> Another option, now that I think about it, though, is a TCP option which
>> contained the service name - one well-known port would be the "demux port",
>> and which actual application you connected to would depend on the value in
>> the TCP option.
>>
> Like tcpmux, port 1, RFC 1078?

Exactly, except to use a TCP option rather than putting the port name in
the data stream - where it isn't available until the data is already
being exchanged (and ack'd).

Joe

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