You need to create Network objects corresponding to the machines hosting the SSO agents and to the Active Directory domain controllers, if you have several of them.
To create these objects, click on the module Network objects (Objects menu).
Next, click on Add. Select Machine and enter the name of the SSO agent or the domain controller. Specify whether this machine has been configured in dynamic (DHCP changes the IP address upon each connection) or static (fixed IP address) DNS resolution. The machine’s MAC address is not required.