Ping the intranet server on the SVN3000 to check whether the server can be pinged through.
If the server cannot be pinged through, it indicates that problems exist in the route between the virtual gateway and intranet server. Check the cables between the virtual gateway and the intranet server. If the connections are normal, check routing configurations.
When a user logs in to the virtual gateway UI, if the Start button is displayed in the Port Forwarding column, it indicates that port forwarding is disabled. In this case, click Start to enable port forwarding.
If a user connection times out, the Start button is displayed in the Port Forwarding column. Click Start to re-enable port forwarding. If you click Start, the login page is displayed. In this case, you need to re-log in and enable port forwarding.
If the port is disabled, enable the port.
Cause one: The network connection is faulty.
Cause two: Port forwarding is disabled.
Cause three: The user connection times out.
Cause four: The corresponding port on the intranet server is disabled.
Cause five: The virtual gateway policy is incorrectly configured.