Does the default firewall block ports on the LAN?

Installing and Using OpenWrt
1

I recently swapped out an older router for one that I installed OpenWRT on and now wired LAN connections can ping each other, but not open (for example) port 8000.

2

Are you talking about LAN - LAN connections? These are switched (L2), not routed (L3). In general, the firewall is not part of these type of connections. There are 2 ways you can prevent L2 connections

  1. for wireless clients, you can use client isolation. But this is all-or-nothing.
  2. if the router sits between the two devices, you may be able to use bridge filtering. But depending on your hardware and configuration, that may not work as expected.
1 Like
3

Yes, I mean LAN - LAN connections. I don't want them to be isolated, but somehow, only some ports are being allowed. Since you are saying that LAN - LAN connections are switched and not going through the firewall, there must be some other issue going on. Thanks

4

Does the problem affect all devices or just some? Wired devices? wireless devices? both?

5

The problem was a firewall rule on the server that used the old IP addressing scheme.

Thanks for the help!

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