But before, it is a good practice to disable UFW, so that deleting ALLOW rules won’t block our way with ssh connection sudo ufw disable and then: sudo ufw reset Configuring UFW PoliciesĬonfiguring Uncomplicated Firewall Policies is done through config file! nano /etc/default/ufw The default policy of ufw is to DENY EVERYTHING - which is definitely a good policy.

If anything goes wrong, or you want to revert any changes to defaults, you can do that. **Then the host 192.168.1.2 WILL STILL BE BLOCKED Resetting UFW So if the 2nd rule denies all traffic for all the network e.g. IMPORTANT: ** It should be mentioned that these rules are interpreted one by one.

While deleting the rules, we can refer to these numbers, instead of retyping the whole rule with sudo ufw delete rule 5 - this is pretty handy I’d say! Sudo ufw status numbered - Will provide us with a numbered list. In the beginning you’ll see that the output is simply Status: active Sudo ufw status - Gives us basic firewall rules. ufw enable - will make ufw active Most used commands in UFW.systemctl enable ufw - If you’re using systemd - most of you’re using it by default.sudo pacman -Syu ufw - Arch Linux Enabling the ufw service.iptables -A INPUT -s -j ACCEPT, we are simply typing combination of keywords such as sudo ufw allow from to any. Instead of running iptables command with flags e.g.By ufw - Uncomplicated Firewall - which is also a commands tool, but it simplifies is a lot.There are at least two (That’s how many I know) ways to configure iptables rules:

Iptables firewall