Troubleshooting

Check Sensor Proxy Status

Scenario

Sensor Proxy appears to be offline or is not communicating with your management console.

Solution

Verify the state of the Sensor Proxy service.

Steps

1. Log in to the remote Sensor Proxy host via SSH to ensure the operating system is functional.

2. Confirm that the Sensor Proxy daemon is running by executing the following command:

   # service sensorproxy status

   Note: The output should indicate that the service is running and show a process ID (PID).

3. If the service is not running, start the service:

   # service sensorproxy start

4. Verify the process is active by checking the status again or using the ps command:

   # ps -ef | grep sensorproxy

Recover Sensor Proxy

Scenario

There was a problem with your Sensor Proxy and you need to install a new Sensor Proxy to allow your sensors to continue communicating with Tenable Vulnerability Management or Tenable Security Center.

Solution

Sensors that were linked via Sensor Proxy can continue communicating with Tenable Vulnerability Management or Tenable Security Center if:

• The sensors can reach the new Sensor Proxy on the same hostname or IP address as the original Sensor Proxy.
• The new Sensor Proxy is using the same certificates as the original Sensor Proxy.

Steps

1. Install the new Sensor Proxy on the same hostname or IP address.
2. Copy the server certificate files that you previously backed up from your initial installation of Sensor Proxy to the same location in the new Sensor Proxy.
3. Start Sensor Proxy.