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Install a Nessus Agent on Mac OS X

Get the Linking Key

  1. In Nessus Manager, on the top navigation bar, click the Scans button.

    The My Scans page appears.

  2. On the left navigation bar, click Agents.

    The Agents page appears.

  3. In the Linked Agents tab, click the setup instructions link.

    The Agent Setup Instructions dialog box appears.

  4. Record the host, port, and key values.
  5. Click Close.

Download Nessus Agent

From the Nessus Download Page, download the Nessus Agent specific to your operating system.

Note: The following steps require root privileges.

Install Nessus Agent

  1. Double-click the Nessus .dmg (Mac OSX Disk Image) file.
  2. Double-click Nessus.pkg.
  3. Complete the Nessus Agent InstallShield Wizard.

    Note: Next, you will use the command line interface (Terminal) to link your Nessus Agent to Nessus Manager or Tenable.io.

Link Agent Using Command Line Interface

You will need the Agent Key values obtained from the Nessus UI: host, port, and key.

Agent Key Values

Required Values

  • Key
  • Host
  • Port

Optional Values

  • Name (A name for your Agent)
  • Groups (Existing Agent Group(s) that you want your Agent to be a member of)

    If you do not specify an Agent Group during the install process, you can later add your linked Agent to an Agent Group within the Nessus UI.

  1. Open Terminal.
  2. At the command prompt, use the following command as an example to construct your link-specific string.

    Example Mac Agent Link Command:

    # /Library/NessusAgent/run/sbin/nessuscli agent link
    --key=00abcd00000efgh11111i0k222lmopq3333st4455u66v777777w88xy9999zabc00
    --name=MyOSXAgent --groups=All --host=yourcompany.com --port=8834

Verify Linked Agent.

  1. In Nessus Manager, on the top navigation bar, click the Scans button.

    The My Scans page appears.

  2. On the left navigation bar, click Agents.

    The Agents page appears, and the new Agent appears in the table.

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