Diagnostics and troubleshooting
Truth has no answer – against facts, it's difficult to argue, so always count on logs and diagnostics tools to help you solve issues related to firewalls. Based on facts, your troubleshooting will be as sharp as a katana (a samurai's sword). As an airplane pilot, aviation experience taught me that things must be checked using a checklist based on facts, and as a firewall administrator, experience has taught me that a firewall will be blamed for network problems in 99.9% of cases. So, don't guess a problem – check it! OPNsense has a lot of tools that can help you with your troubleshooting. In time, users will start relying on just your word and not blame the firewall for any network (or maybe entire internet) problems. This is my advice for you based on a couple of decades of personal experience.
Starting at Diagnostic tools, go to Firewall | the Diagnostics menu:
- pfInfo: This page shows different information based...