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From: tong@uluru.enet.dec.com (Benny Tong)
Newsgroups: comp.protocols.tcp-ip
Subject: tcp source port number assignment in new tcp connection
Summary: How to assign tcp source port number
Keywords: TCP
Message-ID: <15096@shlump.nac.dec.com>
Date: 3 Sep 90 07:08:24 GMT
Sender: newsdaemon@shlump.nac.dec.com
Organization: Digital Equipment Corporation
Lines: 12


    Does anyone know how to assign TCP source port number when opening a
    new TCP connection? Is there a RFC to suggest how to do this?

    Will the following scheme work ? 

    Initialises the last assigned port number to the smallest port number to
    use (ex. 1000?). For each new tcp connection to be opened, increments
    the last assigned port number (and wraps around at the largest port number
    plus one). Check if this tcp port number is in use already. If it is,
    increments this port number until an unused port number is found. Opens
    a tcp connection with this as the tcp source port number.