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I personally like, will check a lot of things and is just one script that manages all issues. If you have a look to the documentation ( on the section "Basic parameters" you can find a full description of how to manage the ports.


All programs can open ports. Running a firewall would prevent inbound traffic. Running netstat -rn on Linux or OS X will show you all open ports. The ones listening on are not open except to other local programs.

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