I've have a machine which cannot get internet access when connected on a particular ip address, change the ip and it all works fine. There are no block rules and all other ip on the same subnet work fine. This machine gets no ping replies from pfsense but all other ip get a response. I don't see anything logged on the firewall when this machine tries to connect. This machine has no other problems on the internal lan and can access and share resources, it just seems that the pfsense box is blocking this ip for any outgoing traffic, even though there is a rule that allows all lan traffic full outbound access.
Any help on where to start looking would be appreciated. I presume there are may be rules which are not shown on the web gui?