@Peter Bennett,
If you've got Synaptic, start it and search for ufw. I had it without knowing. I installed gufw, which is just a graphical interface to ufw and was able to check the firewall rules.
@Peter Bennett,
If you've got Synaptic, start it and search for ufw. I had it without knowing. I installed gufw, which is just a graphical interface to ufw and was able to check the firewall rules.