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Linux Tutorial :: View topic - Block MSN Messenger HOWTO
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Block MSN Messenger HOWTO

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Joined: Feb 10, 2006
Posts: 28
Location: Sunderland, UK

PostPosted: Thu Jul 06, 2006 9:49 am    Post subject: Reply with quote

What port does it use? Doesn't IM use a certain Port? cant you close that?
If you don't know the answers, at least know where to find them!
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Joined: Jul 27, 2002
Posts: 309
Location: Coburg, Germany

PostPosted: Thu Jul 06, 2006 11:36 am    Post subject: Reply with quote

I use [url=http://www.shorewall.net/]shorewall[/url] on my systems. It provides an easier interface to iptables. I know that does not answer your question, but I think it would make things easier to troubleshoot when problems occur. First it has a logical structure that is easy to track down problems. Second, I think the logging mechanism it provides is easy to use.

If you set the logging level to debug on the rules for port 1863 (the msn port, I think) then you should be able to see "something". It is also possible that whatever tool people are using allows them to change ports. If you looked at the logs, you could see if that's the case.

I googled on "msn block port" and found a few references that might be useful.


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Joined: Sep 12, 2005
Posts: 224
Location: Belgium

PostPosted: Mon Jul 10, 2006 7:37 pm    Post subject: Reply with quote

it's not clear to me whether your implementing this on individual workstations , or on 1 firewall host where all your users have to pass through, but in the latter case, you can make an exeption by making an 'allow' or 'pass' rule for your own ip / hostname Smile. In iptables, make sure this rule comes before the DROP rule you impose on others. squid.conf, I don't know.
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