Configure UFW on Arch Linux

Install and set defaults

pacman -S --noconfirm ufw
ufw default deny incoming
ufw default allow outgoing

Allow services

ufw allow ssh
ufw allow 80/tcp
ufw allow 443/tcp
ufw enable

Status

ufw status verbose

Allow from specific IP

ufw allow from 192.168.1.100 to any port 3306

Rate-limit SSH

ufw limit ssh

Delete a rule

ufw delete allow 8080/tcp