NNM Instance Settings

Use the following options to configure NNM instances in Tenable.sc, as described in Add an NNM Instance.




Descriptive name for the NNM instance.


Instance description, location, or purpose.


Hostname or IP address of the instance.


TCP port that the NNM instance listens on for communications from Tenable.sc. The default is port 8835.


A instance may be marked as Enabled or Disabled within Tenable.sc to allow or prevent access to the instance.

Authentication Type

Select Password or SSL Certificate for the authentication type to connect to the NNM instance.


Username generated during the NNM install for daemon to client communications. This must be an administrator user in order to send plugin updates to the NNM instance. This option is only available if the Authentication Type is set to Password.


The login password must be entered in this option. This option is only available if the Authentication Type is set to Password.


This option is available if the Authentication Type is SSL Certificate. Click the Browse button, choose a SSL Certificate file to upload, and upload to the Tenable.sc.

Certificate Passphrase If you selected SSL Certificate as the Authentication Type and the private key that decrypts your SSL certificate is encrypted with a passphrase, the passphrase for the private key.

Verify Hostname

Adds a check to verify that the hostname or IP address entered in the Host option matches the CommonName (CN) presented in the SSL certificate from the NNM server.

Use Proxy

Instructs Tenable.sc to use its configured proxy for communication with the instance.


The repositories which this NNM instance will save its data to. If NNM will be reporting IPv4 and IPv6 data, at least two repositories (one for IPv4 and one for IPv6 data) must be selected.