Kerberos Credentials for Authenticated Scans

The Security Console now allows you to configure scan credentials using the Kerberos network authentication protocol. Like all other scan credential options, you can configure Kerberos scan credentials on a site-specific or shared basis.

Requirements

Unlike other scan credential types, the Kerberos scan credential feature relies on a matching external authentication source configuration in the Security Console. To use Kerberos for authenticated scanning, you must configure a Kerberos external authentication source.

If you have not configured this external authentication source already, see the Kerberos authentication page for instructions on how to do so.

Constraints

Since this feature relies on a matching Keberos external authentication source to operate, organizations with multi-console environments must take extra steps to avoid any configuration conflicts.

If your organization has multiple Security Console deployments that all use the same Scan Engine, all external Kerberos authentication sources on those consoles must be identical. If discrepancies exist between each external authentication source, it could prevent the Scan Engine from authenticating properly to target assets.

NOTE - Credential Test Limitation

Kerberos credential tests with distributed Scan Engines will fail until you have successfully run an authenticated scan using those credentials on the same target. This behavior is expected since the Security Console does not use the needed information from the matching Kerberos external authentication source until a scan initiates.

Given this condition, do not be alarmed when your credential test fails in first-time configurations. To determine if your Kerberos credentials are configured properly, attempt an authenticated scan with those same credentials and verify that the volume of your scan results is sufficiently large to indicate authentication.

Kerberos Scan Credential Configuration Procedures

After verifying that your Security Console meets the external authentication source requirements, you can configure Kerberos scan credentials in the following ways:

Configure Site-Specific Credentials

To configure Kerberos scan credentials in a site configuration:

  1. In a new or existing site configuration, click the Authentication tab.
  2. Click the Add Credentials subtab. The General portion of the “Add Credentials” view displays.
  3. Name and optionally describe your credentials.
  4. Click the Account subtab to open the credential service selection view.
  5. Expand the dropdown next to “Service” and select Kerberos.
  6. Enter the name of your Kerberos realm in the “Realm” field.
  7. Enter your username, password, and password confirmation.
  8. If desired, open the Restrictions tab to restrict the use of these credentials to a single asset.
  9. Click Create when finished.
  10. Finally, click Save in the upper right corner of the screen to save your site configuration.

Configure Shared Credentials

To configure shared Kerberos scan credentials:

  1. In your left navigation menu, click the Administration tab.
  2. In the “Scan Options” section, click Create next to “Shared Credentials”.
  3. The “Shared Scan Credential Configuration” page displays. On the General tab, name and optionally describe your credentials.
  4. Click the Account tab. Expand the dropdown next to “Service” and select Kerberos.
  5. Enter the name of your Kerberos realm in the “Realm” field.
  6. Enter your username, password, and password confirmation.
  7. If desired, open the Restrictions tab to restrict the use of these credentials to a single asset.
  8. Click the Site Assignment tab. Determine whether the credentials should be available to all sites or just those that you specify.
  9. Finally, click Save in the upper right corner of the screen to complete your shared credential configuration.

Kerberos credentials are ready!

You should now have properly configured Kerberos scan credentials for the purposes of running authenticated scans.