The only way I have been successful is blocking the authentication server.
The best I could figure out is the IM searches for open ports so you
can't just block certain ports.
Rick
""Kevin O'Gilvie"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Does anyone know what command blocks this port..
>
> Regards,
>
> Kevin
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