@nafeasonto said in How do I test if something is being blocked, or find out what teh firewall is actually blocking on incoming connections?:
it's direct connection between the two players, there is no back end server.
Well then you would have the ports need port forwarded on your end... How do you do this - manually or do you allow UPnP to do it..
Connecting to them would have zero to do with pfsense out of the box because its default lan rules are any any outbound.. Simple sniff show you that pfsense is sending syn to their IP, etc.
You still haven't listed any logs show anything blocked, nor have you even stated if these connections are ipv4 or ipv6.
You haven't posted your rules, etc. So there is zero info here to to work with to help you figure out what your problem is.
For all we know the guy(s) you were trying to connect to were the problem. Or your isp talking to those IPs was an issue, etc. etc.