How do I ensure all of the ports on my machine are open or reachable?

Posted by Rev3rse on Ask Ubuntu See other posts from Ask Ubuntu or by Rev3rse
Published on 2011-11-19T16:10:49Z Indexed on 2011/11/22 2:10 UTC
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internet

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games

I was testing port connectivity on my machine because WoW (which uses TCP ports 3724, 6112, and 6881-6999) couldn't connect to the Internet.

So I downloaded PFPortChecker application and ran it using Wine (v1.3). After I tried to check every port, it seems like they're not reachable/closed. Why is that? My firewall is disabled so why is this happening?

How can I open these ports and how can I see if these ports are opened or not?

Also, how can I determine which application is using them?

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