CyberPanel follows deny all rules except for the ports opened by default, you can see default opened ports at: Server > Security > Firewall
Add Firewall Rule
1. Give this rule a name.
2. Select protocol from dropdown either tcp or udp.
3. Enter which port to open for specified protocol.
4. Click ‘ADD’.
This will add rule and reload firewall.
Delete Firewall Rule
Just click on the cross on right side of the rule, this will delete the rule and reload firewall.