When configuring user single sign-on, the PC message receiving mode is adopted. The authentication process has the following steps: 1. The visitor's PC executes the login script and sends the user…

When configuring user single sign-on, the PC message receiving mode is adopted. The authentication process has the following steps: 1. The visitor's PC executes the login script and sends the user login information to the AD monitor. 2. The firewall extracts the corresponding relationship between the user and IP from the login information and adds it to the online user table 3. The AD monitor connects to the AD server to query login user information, and forwards the queried user information to the firewall. 4. The visitor logs in to the AD domain, and the AD server returns a login success message to the user and issues a login script. Which of the following is the correct order?