Updating squidguard blacklist
The DNS forwarder is found under the Services Menu in pf Sense. When the DNS forwarder is enabled all DNS requests sent to pf Sense will be forwarded to the DNS servers listed under the System: General Setup menu.
It is commonly used in computer networks to protect the network from attack, to filter nefarious web content and pages requested by local users, and to speed up the delivery of web pages and web content by caching (storing) commonly requested web pages, documents, and media.
Update (5/4/11)If you have updated to pf Sense 2.0 you may notice that DNS Blacklist is currently unavailable.
As an alternative you can set up Squid Guard which offers the same functionality and is much more versatile.
Once you enable the forwarder pfsense will set the LAN IP address as the DNS server for DHCP clients on your network.
Clients will send DNS queries to pfsense which will forward the requests to the DNS servers you entered.
If you didn’t enter any DNS servers it will use the addresses provided by your ISP.