Confirm the networking conditions of the device in the following five scenarios:

1. The device can access the Internet normally and directly have access to the Sangfor online patch server.

2. The device cannot directly access the Internet but uses a proxy server to access the Internet and update the rule database.
3. The device is offline but able to use the OLU LAN patch server to obtain patch updates.
4. The device is offline and unable to use the OLU LAN patch server, but the PC accessing it can access the Internet.
5. Both the device and the PC accessing it are offline and the device cannot use the OLU LAN patch server.

Confirm the configuration of the update server. You can set the update server in one of the following three ways:

1. Manually enter the server IP address: Manually enter the IP address of the OLU LAN patch server. Then, you can obtain a patch for the update from the server. (At present, the OLU LAN patch server supports only patch updates, rather than rule database updates.)

2. Automatically select the server IP address: The device will perform the polling process for online update servers available for Sangfor devices to select an optimal one for obtaining update information automatically.
3. Select a specific server IP address: Obtain update information from the specified online patch server.