IP is located on the Port1 IP is not behind a router.

Just to confirm: a working and non-working register are on the same switch, and that switch is connected to which port of the firewall? It sounds like the firewall thinks they are on two different Firewall ports (Port1 and Port2). Is it confused about Port2 not being WAN, or are you not using Port2 as the WAN (it's just a convention from Sophos and of course you don't have to use it that way)?

it should all be going to LAN. Its Sophos XG fw connected to a switch that then connects to a 24port switch that both registers are on.

Everything was working fine before thats why im puzzled.

Port 2 on FW just hooks up to a comcast modem.

But you say that the working register is on Port 2, above, and that port is hooked up to the WAN here. That's why I'm confused. Are we talking two different sets of ports: switch and firewall?

Thats what i got from the trace route from Sophos diag tool.

That's why im confused. Its a simple client network, there's no VLANs no trunking. But in sophos FW when I ran a trace route its picking up the WORKING register on the WAN PORT 2. 

Hello Vlad,

I think you mixed up your physical ports. Have a look at the cabling to make sure everything is in place.

Hello Vlad,

I think you mixed up your physical ports. Have a look at the cabling to make sure everything is in place.

I believe youre correct. The more I thought about it and the client is 2hrs  but not tech savvy so I will confirm myself on a site visit.

Thank you all