@jinat
You are executing nslookup where ?
On pfSense ?
On a device connected to a LAN of pfSense ? If this is the case, what is the DNS used by this device ? Is (the IP of) it pfSense ?
@jinat said in nslookup is not working from upstream DNS forwarding server:
Could you please, help me with what possible configuration should I make sure to make it working?
There is no configuration on your side needed.
pfSense, out of the box, works.
Your devices, as soon as you take them out of the box (== they are / were new) can connect to your network, and have Internet access.
If you really have to transmit all your DNS requests from pfSense and underlying LAN networks, to some DNS server of your choice (you want to forward) : see Netgate video's or manual about how to do so. This is (should be) completely transparent for the network clients, and pfSense itself.
C:\Users\Gauche>nslookup www.google.com
Serveur : pfsense.my-local-network.local
Address: 192.168.1.1
Réponse ne faisant pas autorité :
Nom : www.google.com
Addresses: 2a00:1450:4006:80a::2004
216.58.198.68