You can put this into Guardian > Policy Objects > User Defined > Transparent HTTPS Incompatible Sites > URL Patterns 192\.168\.0\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9]) And here's a bit more info about that range: Address: 192.168.0.0 Netmask: 255.255.255.0 = 24 Wildcard: 0.0.0.255 => Network: 192.168.0.0/24 HostMin: 192.168.0.1 HostMax: 192.168.0.254 Broadcast: 192.168.0.255 Hosts/Net: 254 Class C, Private Internet