Link an Unlinked Agent to Sensor Proxy

Note: Tenable Security Center 6.5 only supports Sensor Proxy linked with Tenable Web App Scanning scanners. Tenable Nessus scanners and Tenable Nessus Agents are currently unsupported. Tenable Vulnerability Management supports Sensor Proxy linked with all sensors except Tenable Web App Scanning scanners.

If you have an agent that is unlinked, you can link it to Sensor Proxy to communicate with Tenable Vulnerability Management.

If you have an agent that is linked to a manager besides the Tenable Vulnerability Management instance you want Sensor Proxy to communicate with, you must first unlink the agent before linking the agent to Sensor Proxy.

Tip: To link an agent that is already linked toTenable Vulnerability Management, see Link a Currently-Linked Agent to Sensor Proxy.

Before you begin:

Install Sensor Proxy.

To link an unlinked agent to Sensor Proxy:

If your agent is already linked to a manager other than Tenable Vulnerability Management, unlink it using the following command:
Copy
```
# nessuscli agent unlink
```
The agent is unlinked from its manager.
On the agent, link to Sensor Proxy using the following command:
Copy
```
# nessuscli agent link --key=<linking key> --host=<Sensor Proxy IP or hostname> --port=443
```
- For key, use the Tenable Vulnerability Management linking key. For information on retrieving the linking key, see Link a Sensor in the Tenable Vulnerability Management User Guide.
- For host, use the Sensor Proxy IP address.
Note: You can add other agent linking options, except for the --cloud option. For more information, see Nessuscli Agent in the Tenable Nessus Agent User Guide.