Probably the most secure approach that gives best access would be to follow that link. Assuming you havve everyone configured with the OpenDNS servers for DNS, make a Network Group "OpenDNS Servers" = {208.67.220.220 & 208.67.222.222} and use it in a packet filter rule 'Internal (Network) -> DNS -> OpenDNS Servers : Allow'.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
Probably the most secure approach that gives best access would be to follow that link. Assuming you havve everyone configured with the OpenDNS servers for DNS, make a Network Group "OpenDNS Servers" = {208.67.220.220 & 208.67.222.222} and use it in a packet filter rule 'Internal (Network) -> DNS -> OpenDNS Servers : Allow'.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005