AZTCOFW / TECHNICAL GUIDE
Client Tests
- Test if the client can ping the LAN IP of the firewall
- If this fails, check the LAN rules, client IP/subnet mask, LAN IP/subnet mask, etc.
- Test if the client can ping the WAN IP of the firewall
- If this fails, check the client’s subnet mask and gateway
- Test if the client can ping the WAN Gateway IP of the firewall
- If this fails, check the client’s subnet mask and gateway, and double check Outbound NAT on the firewall
- Test if the client can ping an Internet host by IP address (e.g. 8.8.8.8)
- If this fails, check the client’s subnet mask and gateway, and triple check Outbound NAT on the firewall
- Test if the client can ping an Internet host by Host name (e.g. www.google.com)
- If this fails, check the client’s DNS settings, and/or the DNS Forwarder on the firewall (Services > DNS Forwarder, Diagnostics > DNS Lookup)
Imported from the AZTCOFW knowledge base on 2026-09-05. Historical guidance may refer to older software versions. Confirm applicability before changing a production system.
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