Issue with Bridged Ports in OPNsense Setup

[Combatsatellite]

Hello everyone,

I’ve encountered a strange issue with my current OPNsense setup and could really use some help.

Previously, I had the same NIC bridged in the exact same way, and it worked as expected. However, now I’m experiencing a problem when using the bridged ports: I can’t access services running on devices connected to other ports of the same bridge.

Here’s an example:

    My NAS is at 10.0.0.20, and my PC is at 10.0.0.10.
    When both are connected to the same switch behind the bridge, everything works fine—I can access the NAS from the PC.
    But if I plug the NAS or an access point into another bridged port, things go awry:
        The NAS remains reachable from the WAN, but I can no longer access it from my PC.

I’ve already followed the steps outlined in this guide: https://docs.opnsense.org/manual/how-tos/lan_bridge.html , including setting up the two tunables mentioned there. Those tunables were already configured correctly before the issue arose.

If anyone has experienced a similar problem or has any advice, I’d greatly appreciate your help!

Thanks in advance!

[Combatsatellite]

After further debugging I still was not able to find out what the issue is..

[Monviech (Cedrik)]

You could do a packet capture on the bridge and member interfaces and look at:

- Do arp requests and arp replies work correctly?
- Do the packets move from interface, to bridge, and out of the other interface?
- Do Firewall rules block your packets?

[Combatsatellite]

You could do a packet capture on the bridge and member interfaces and look at:

- Do arp requests and arp replies work correctly?
- Do the packets move from interface, to bridge, and out of the other interface?
- Do Firewall rules block your packets?

I will check it when i have time in the near future (as i will have to re patch some stuff) and report back.

[Patrick M. Hausen]

Post the complete output of "ifconfig" on your OPNsense, please.