Select About > Support Tunnel to open a support tunnel. Support tunnels are one of the preferred methods for Support Engineers to assist with troubleshooting issues on the system. Support tunnels provide a secure method of accessing a system remotely.
In addition to encrypting the transmission (which helps to protect data), a port is assigned randomly to discourage unwanted access attempts (known as port knocking). Only one tunnel can be open at a time. If an existing tunnel is open, click Support Tunnel to force the tunnel to close. The Support Tunnel connection automatically closes if it is inactive for several minutes, or if there is no attachment within a few minutes of being opened.
Note: You can also access the support tunnel in Settings > System, Updates, and Licensing > Support Toolbox (Advanced) > Support Tunnel.