(2. Note for bridge mode: Be sure to set up the network bridge first, and then install the Tianyicheng network management system software. Remember!!! 1. Prepare a computer with dual network cards (two Gigabit network cards are recommended); 2. Windows series 32/64-bit operating systems that support network bridges: XP/2003/Vista/2008/Win7; 3. Connecting to the network: Connect one network card to the router/firewall with a network cable, and the other to the main switch; 4. Create a bridge: Enter the control panel, click Network Connection, select the two physical network cards together, right-click, and select Bridge; 5. Set up the bridge: After the creation is successful, the intranet computer can access the Internet normally. A bridge will be created automatically in the local connection; 6. You need to set the IP address, gateway and DNS for the virtual bridge. This computer will connect to the Internet through the bridge. Note 1: The IP address set by the bridge should be in the same network segment as the gateway; Note 2: The bridge generates a new network card address, assuming you have done IP-MAC binding on the router, you should modify the corresponding rules; 7. Software settings: control mode settings, select the bridge mode. The monitoring network card selects the network card connected to the internal switch.)