RouterFix  ›  ToolsIndependent support guide

NAT and CGNAT Decision Tree

Classify a manually entered WAN IPv4 range. Enter observations from your own device; RouterFix does not read router settings, scan your network or upload secrets.

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Before you start

Keep passwords, VPN private keys, MAC addresses and configuration backups out of this form. Results are guidance, not a remote test or guaranteed diagnosis.

Enter your observations

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How to use the result

Check the exact model and firmware in the linked official instructions. Change one setting at a time, test a wired and wireless client where relevant, and keep a way to undo the change.

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