Like many Linux distributions, Windows, and macOS, Ubuntu has a firewall. This security feature can prevent connections from unwanted sources on your system. Sometimes, though, you might want to ...

During Redhat 9's install, i specifically said to disable the firewall. Now, i installed lmule and it tells me that it can't reach port 4662. How can i find out if the firewall is turned on or off? I ...

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