(2 Install Network Guard Firewall 2.1 System Composition and Standards 2.1.1 System Composition 2.1.2 Electrical Characteristics 2.1.3 Physical Standards 2.1.4 Security Standards and Standards 2.2 Determine the Working Mode of Firewall 2.3 System Installation 2.3.1 Hardware Equipment Installation 2.3.2 Manager installation 2.3.3 Check the working status of the Network Guard Firewall 2.4 Log in to the Network Guard Firewall 2.4.1 Lack of factory configuration 2.4.2 Use the CONSOLE port to log in to the Network Guard Firewall 2.4.3 Set other management methods 2.4.4 Manage the relevant settings of the host 2.4.5 Logging in to the firewall through a browser 2.4.6 Logging in to the firewall using the centralized manager 2.4.7 Logging in to the Network Guard firewall through SSH 2.5 Restoring the factory configuration 3 Configuration case 3.1 Case 1: Routing mode 3.2 Case 2: Mixed mode 3.3)