I just set up a new OPNsense firewall and I'm running into a weird connectivity issue.
WAN and LAN both appear to be configured correctly (at least partially).
From my PC on the LAN, I can access the firewall GUI without any issues.
The firewall itself has full internet access — it can ping external hosts, check for updates, and install them successfully.
However, my LAN clients cannot access the internet at all.
Some additional details:
I have not created any custom firewall rules.
The default "allow LAN to any" rule is present and appears to be working.
I can see traffic hitting that rule (including outbound attempts to port 443).
The traffic graph shows some activity going out.
From the LAN side, everything works up to the firewall — but nothing beyond it.
On the client side, all internet requests just time out completely.
At this point, it feels like traffic is leaving the LAN and passing through the firewall, but return traffic is not making it back to the client — almost like a routing or NAT issue.
Has anyone run into something like this before or have suggestions on what I should check next?
Quote from: Matt_K on February 20, 2026, 05:28:51 PMHowever, my LAN clients cannot access the internet at all.
What doesn't work EXACTLY ?!
Post some ping/tracert/traceroute/dig/drill/nslookup output for example !!