[Linux] How to Set Up a Firewall using UFW on Ubuntu

[CriminalMind]

This tutorial is basic but can resolve some problems with blocked ports.

I'll explain using UFW.

Open Terminal and follow these commands (I will use a port example):

sudo ufw enable

If you get a message that UFW is not installed, type this command:

sudo apt-get install ufw

And now:

sudo ufw status

At this moment your UFW is ON

To open your port, it is very easy. Open your torrent software and copy your port.
Now, type this command:

sudo ufw allow 1234/tcp

sudo ufw allow 1234/udp

If you want to block any port, just change ''allow'' to ''deny''.

Don't forget to change ''1234'' to your port that you are using in your torrent software.

Now you are Connectable!