Client DNS setup
After you install NxFilter, you need to set your client devices using NxFilter as their DNS server.
NxFilter should be the only DNS server for your network
After you install NxFilter, you will want to monitor and filter Internet activity in your network.
To monitor and filter Internet activity, you need to make NxFilter to be the only DNS server for your network.

If your router doesn't support DHCP, you can use a freeware DHCP server.
If you have a firewall you can force your users to use NxFilter as their DNS server by blocking outgoing traffic on UDP/53, TCP/53 port.