How to prompt captive portal for ip range?

Question

Hi, i want to prompt the captive portal for a ip range, lets say i have this: 
 
 Known network: 
 192.168.110.1-254 
 
 Unknown network (banned devices, or dhcp): 
 192.168.112.1-254 
 
 How can i prompt the captive portal for the unknown network, to let users put their username and password, thanks a lot.

lferrara · Accepted Answer

Make sure you have an: 
 
 allowed dns firewall rule on top if your clients are using public dns servers 
 enabled match know users on the firewall rule (lan to WAN) where authentication is needed 
 enabled show captive portal to unkown users 
 Configure captive portal under Authentication > Services 
 
 Regards

lferrara · Answer

Mike, 
 create 2 firewall rules, where on: 
 
 the first LAN to WAN you do not enable match know users for the source network 192.168.110.1-254 
 on the second LAN to WAN, you enable match know users for the source network 192.168.112.1-254 
 
 Regards

lferrara · Answer

Check the Captive Portal settings under Authentication > Services. Also read page 9 from this doc: 
 /cfs-file/__key/communityserver-discussions-components-files/124/7343.Sophos-XG-Firewall-v16_5F00_05-RN_5F00_v3.3.pdf 
 Regards