Ethereal-users: RE: [Ethereal-users] File Sharing and Media Protocols

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From: "Fardid, Reza" <RFardid@xxxxxxxxx>
Date: Mon, 24 Feb 2003 17:44:30 -0800
Pardon me for asking, but what or who constitutes "a fully
and publicly documented protocol" ?
What I know is that is can be sniffed, and IANA recognizes it.

I am trying to find out what I need to contribute, if I am
neither the protocol developer, nor affiliated with the organization/entity
that has developed the protocol ?

-----Original Message-----
From: Guy Harris [mailto:guy@xxxxxxxxxx]
Sent: Monday, February 24, 2003 3:22 PM
To: Fardid, Reza
Cc: 'ethereal-users@xxxxxxxxxxxx'
Subject: Re: [Ethereal-users] File Sharing and Media Protocols


On Mon, Feb 24, 2003 at 02:44:23PM -0800, Fardid, Reza wrote:
> These peer-to-peer protocols use registered ports.
> Therefore; no reverese engineering is required.

Reverse engineering is not required only if a protocol is fully and
publicly documented (or if the person writing the dissector has
non-public documentation *AND* permission to publicly release GPLed
software that dissects the protocol if it's written using that
non-public documentation).

It has nothing to do with whether the port is in some sense
"registered".