In SSO, the authentication point is the firewall, which authenticates users and through which users connect to the network.

Receiving PC messages is an AD SSO mode.

In AD server security log query mode, the administrator needs to deploy the AD SSO service on the AD monitor and configure AD SSO parameters on the firewall to receive user login information sent by the AD SSO service.

In SSO, the firewall is not an authentication point. Instead, the firewall obtains user login information from other authentication systems to enable users to connect to the network through the firewall.