How to Use This UFW Firewall Rule Generator

1. Select Allow, Deny, or Limit for your firewall rule.
2. Choose a predefined service or manually enter the Port/Protocol (e.g., 80/tcp).
3. Optionally, enter an Application Name (e.g., OpenSSH) instead of a port.
4. Specify IP/Subnet if you want to limit the rule to a certain source.
5. Add a comment for clarity (optional).
6. Select IPv4 and/or IPv6 as needed.
7. Click Add Rule to save it to the list.
8. When done, click Copy Script or Download as .sh to get your ready-to-run bash script.
9. On your Linux server, run:

   bash ufw_rules.sh

10. Check rules with:

    sudo ufw status verbose