I have xml file of the what are sites need to block. where i add the xml file for the firewall rules . please hel me
your best bet is to read up on Squid, and install the package from within the pf webUI.
simply blocking sites based on IP via the firewall is possible but will end up taking a ton of time to enter, and maintain (ip's can and will change especially with a large list of hosts like you seem to have)