How to install UFW and use it to set up a basic firewall -

UFW lets you write your firewall rules more like plain sentences or traditional commands. It lets you manage your firewall like any other service. It even saves you from remembering common port numbers.

This is a companion discussion topic for the original entry at

The Steam TCP port range doesn’t seem correct:

sudo ufw allow 27036:26037/tcp

Shouldn’t the second value be 27037?

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Thank you @Stephen_Croll ! The article will be updated shortly.