Firewall rules control traffic coming from specific sources or going to specific destinations when your Smoothwall Appliance is acting as a Firewall. When your organisation starts using Smoothwall Appliance, you’ll have these default Firewall rules:
- Allow internal > external: All traffic coming from internal interfaces is accepted. Logging is off.
- Block QUIC: All QUIC traffic on UDP ports 443 and 80 is dropped. Logging is off.
- Default rule: All other traffic is dropped. This reduces traffic and logs but leaves less information available for troubleshooting when used instead of rejecting the traffic. Logging is on.
For security purposes, you must edit your Firewall rules to accept traffic only for the Services you use, and limit access to the Source IP addresses that need it.
Image 1: Default Firewall rules.