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From: Michael Fredericks (mfredericksinfosol.com)
Date: Thu Feb 14 2002 - 10:04:41 CST

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    Hi All,
    Thanks for the warning on MSN Messenger. I have restricted access to the
    service from my network and suggest that it might be a good idea for
    others to do the same. I found that MSN Messenger uses TCP port 1863 but
    it also seems to fallback to an HTTP connection to various hosts on the
    "messenger.hotmail.com" domain. Therefore I found that I had to restrict
    the TCP port as well as any http connection attempts to this domain.

    Thanks,

    Michael Fredericks
    Manager - Networks and Telecommunications
    InfoSol, Inc.
    mfredericksinfosol.com
    http://www.infosol.com/

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