DNS – OneDefender
DNS OneDefender is a free service offered to all the members of OneFirewall Alliance, providing Secure Domain Name Resolution.
The service uses:
DNS OneDefender offers:

Enabling DNS Defender from OneFirewall requires just a simple configuration change on your DNS entries. Most organizations will only have to change the DNS settings in the central DHCP server, hence automatically updating all the users in a few seconds with no action needed at end devices at all.
Value Add
Free service that can be set without installation or OneFirewall support