Single Host being blocked by pFBlockerNG
I am running pfBlockerNG ver. 2.1.4_22 on pFsense ver. 2.4.5-RELEASE-p1
I have a single Windows 10 host on the network that cannot resolve FQDN entries using nslookup, server IP address 192.168.25.254. I have a firewall rule in place, to force ALL hosts on the network to use the pFsense router only for their DNS lookups. I can perform nslookup’s on all other hosts except for one at IP address 192.168.25.14.
I created a custom rule, under firewall rules, to allow the blocked host to use a custom DNS at IP address 184.108.40.206 instead of the local pfSense DNS at IP address 192.168.25.254, now the client can resolve FQDN entries using nslookup. Where can I look too see why this one host cannot resolve FQDN using the local pFsense DNS? Any help would be greatly appreciated!
I'm curious on how you determined that pfBlockerNG is the root cause of the issue?
If I were troubleshooting, I would create a firewall rule:
Source = 192.168.25.14:*
Destination = *:53
Enable logging and move it to the top of the rules for that interface and see what it captures.