[comp.protocols.tcp-ip] Port Number

deanr@lakesys.UUCP (Dean Roth) (03/14/89)

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.

Please email me. My node's news delivery has not
been 100% reliable recently. Thank you.

deanr@lakesys.lakesys.com
deanr@lakesys.UUCP
{rutgers, uwvax} uwmcsd1!lakesys!deanr

Mly@AI.AI.MIT.EDU (Richard Mlynarik) (03/14/89)

    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!