You can query logs on the VPN tunnel management page and troubleshoot failures during the VPN tunnel connection according to the log information.
Directions
2. Click VPN Connection > VPN Tunnel on the left sidebar to go to the management page.
3. On the VPN Tunnel management page, click More > Logs on the right of the tunnel to go to the log retrieval page.
4. You can view the log details in different time frames on the log retrieval page.