Single Host being blocked by pFBlockerNG
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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 208.67.222.222 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!
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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.