Firewalla Blue - incorrect device map when devices are connecting via a wireless bridge

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Max Menon

• September 20, 2020 21:09
• Edited

I have a firewalla blue device that is connected to a EdgeRouterX (router) in my downstairs living room. I have a Linksys EA-6400 (wifi routers) that is hardwired to the EdgeRouterX. The EdgeRouterX is the only one offering DHCP service to all devices in the house. Several wired and wireless devices hang off this 6400 router. These all show up fine on Firewall App. I also have a Wireless Bridge setup using two Linksys EA7300s to allow upstairs devices to reach the internet. One of the EA7300s is downstairs and is hardwired to the EdgeRouterX. The other EA7300 is upstairs in my home theater room and my AppleTV, Roku, Vizio TV, Blu-Ray player, HDHomeRun etc.  are hardwired to this EA7300. 

The issue is that the Firewalla incorrectly identifies devices that are coming through the wireless bridge. All the devices are on the same network and pull their IPs from the EdgeRouterX. They all access the internet fine without issues. But since the Firewalla is not able to identify the devices correctly, I cannot police the traffic from these devices. Anyone know why?

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  Chris Thomas

  • October 20, 2020 12:21

  I suspect that the wireless routers are modifing the L2 MAC address attached to the packets from your wireless bridge. Its probably because they are routers and not true wireless ap/bridge devices.

  You could validate this with packet captures, you'd need one from the endpoint, and another one on the router, or router side of the wireless bridge.

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