---
title: "How do I troubleshoot my configuration?"
slug: "how-do-i-troubleshoot-my-configuration"
updated: 2026-05-27T12:05:48Z
published: 2026-05-27T12:05:48Z
canonical: "docs.insys-icom.com/how-do-i-troubleshoot-my-configuration"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.insys-icom.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 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](https://docs.insys-icom.de/online_help/m3/en_plausi.html). 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 a required [WAN chain](https://docs.insys-icom.com/kb/docs/en/wan-chains-and-wan-groups-en) is not configured/started/active, the function based on it is not available. The status of the WAN chains is displayed on the *Status* → *Dashboard* page.

If connections cannot be established, this may be caused by missing or wrong [IP filter rules](https://docs.insys-icom.com/kb/docs/en/netfilters-en) (firewall). This can be located by deactivating the IP filters temporarily on the *Network → Firewall / NAT* page.