Problems with port forwarding

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Acchah

• March 17, 2025 19:52

Had to switch to new NIC on server. Now certain port forwarding won't work. Can ping server, but won't echo. Deleted these ports on Firewalla and reinstalled them. Still not working. Have any suggestions. Firewalla Gold.

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  Firewalla

  • March 17, 2025 20:53

  Double-check and make sure your "server" is not blocking incoming forwarded packets. (application layer firewall)

  And a minor thing, I assume you reinstalled the port forward to the new MAC instead of the old one

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  Acchah

  • March 18, 2025 04:03

  Did reinstall port forward to new MAC but didn't reboot the Firewalla. Once rebooted it is all good. Go figure.

  Thanks

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  Firewalla

  • March 18, 2025 04:42

  You shouldn't need to reboot, this is likely a bug. May I know if you are forwarding tcp or udp ports?

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  Firewalla Support

  • March 18, 2025 08:50

  We tried in lab, Firewalla has UDP and TCP port forwarding to a device, modify the destination to another device, port forwarding still works. This is verified by using NC command.  Ping is using ICMP protocol which doesn't have port.  May I know how do you verify whether the port forwarding works? Can you share the detail command ?

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