pfsense – traceroute not working

pfsense Firewall – traceroute is not working (getting blocked by the firewall)

Traceroute is not getting through pfsense
Traceroute is not getting through pfsense


traceroute without a parameter uses UDP to get the hops. I figured out that this traffic is getting blocked because the destination port is not permitted.

The port changes from around 33440 ongoing (+1 every time), so this is dynamic and can’t be solved with one single port.

With the parameter -I you use ICMP.

Currently i have a rule which is allowing ICMP traffic to the wan network and now it is working with the parameter.

I also need this rule to ping wan hosts. Not just for traceroute. This is also going over the ICMP protocol.


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