In iMaster NCE-Campus, device management functions are tightly integrated with secure remote access mechanisms to ensure safe and efficient O&M operations. One such mechanism is theSSH proxy tunnel, which allows administrators to remotely access managed devices through the controller without directly exposing device management interfaces to the external network.
According to HCIP Datacom Campus Network documentation, theSSH proxy tunnel is automatically established when the Command Line function is usedon the Device Management page. When an administrator clicks theCommand Lineoption, iMaster NCE-Campus dynamically builds a secure SSH proxy channel between the controller and the target device. This enables real-time CLI access to the device through the web interface while maintaining strict security controls.
Other functions such asSummary,Entry Query, andDevice Configurationdo not require direct CLI interaction with the device. These functions rely on management protocols and configuration delivery mechanisms such as NETCONF or telemetry, and therefore do not trigger the establishment of an SSH proxy tunnel.
The Command Line function is specifically designed for scenarios such as advanced troubleshooting, manual verification, or executing device-level commands. Automatically enabling the SSH proxy tunnel at this moment ensures that CLI access is bothsecure and on-demand, reducing attack surfaces and simplifying remote maintenance.
Therefore, the function that automatically enables the SSH proxy tunnel isCommand Line, making optionDthe correct answer.