On Mon, Dec 04, 2000 at 09:19:58AM +0100, J?rgen Nieveler wrote:
> >How can I close Napster, ICQ and MSN Messenger�s ports? I use Linux with
> ipchains.
>
> Haven't tried with Napster and MSN, but ICQ is a bitch to block... at least
> on the Port-Level.
>
> You can block access to login.icq.com, though, and prevent users from loging
> in..
Or block all udp traffic and then selectively allow what you need
(excluding known ICQ ports for example).
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