Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!AI.AI.MIT.EDU!Mly
From: Mly@AI.AI.MIT.EDU (Richard Mlynarik)
Newsgroups: comp.protocols.tcp-ip
Subject: Port Number
Message-ID: <19890314153650.5.MLY@JACKIE-O.AI.MIT.EDU>
Date: 14 Mar 89 15:36:00 GMT
References: <459@lakesys.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 21


    Date: 13 Mar 89 22:46:04 GMT
    From: marque!lakesys!deanr@csd4.milw.wisc.edu  (Dean Roth)


    My company will be producing commercial TCP/IP
    server  and client software. Question:
    how do we pick a port number that will not collide
    with another software package's port number?
    I have already tentatively selected a "large"
    and hopefully improbable number, but I'd like
    to do better than "toss darts in the dark" looking
    for a "good" number to use.

Use TCPMUX, RFC1078.

Choose a contact name like "VERSION-1.MY-PROTOCOL.MY-COMANY-NAME.COM"
(Assuming that "MY-COMPANY-NAME.COM" is a registered domain name,
and hence guaranteed unique.)

Down with meaningless numbers!