FAQ - How do I troubleshoot my configuration?
The router allows a very complex configuration to cover almost all application cases custom-made. This can cause a complex troubleshooting - in particular for configurations made by third parties.
A comfortable troubleshooting option is provided by the plausibility check. It mainly serves for detecting obvious configuration gaps. It cannot expose all configuration failures of the function. This applies especially to IP filters and NAT rules.
If connections cannot be established, this may be caused by missing or wrong IP filter rules (firewall). This can be located by deactivating the IP filters temporarily in the Netfilter menu on the IP filter page.