Configuring Tenable.io Connectors

Vulnerability scanners examine hosts for known and possible security vulnerabilities. You can use this connector to ingest scan reports to the Stellar Cyber data lake.

Stellar Cyber connectors with the Collect function (collectors) may skip collecting some data when the ingestion volume is large, which potentially can lead to data loss. This can happen when the processing capacity of the collector is exceeded.

Connector Overview: Tenable.io

Capabilities

  • Collect: Yes

  • Respond: No

  • Native Alerts Mapped: No

  • Runs on: DP

  • Interval: Configurable

Collected Data

Content Type

Index

Locating Records

Vulnerabilities

Scans (reports and events)

Scans

Assets (for Vulnerabilities)

msg_class:

security_scan

security_scan_reports

msg_origin.source:

tenableio

tenableio_reports

msg_origin.vendor

tenable

msg_origin.category:

security_scan

Domain

N/A

Response Actions

N/A

Third Party Native Alert Integration Details

N/A

Required Credentials

  • Access Key and Secret Key

Adding a Tenable.io Connector

To add a Tenable.io connector:

  1. Obtain Tenable.io credentials
  2. Add the connector in Stellar Cyber
  3. Test the connector
  4. Verify ingestion

Obtaining Tenable.io Credentials

The following credentials are required:

  • Create a user with Administrator privileges.

  • Log in as that user to accept the license agreement.

  • Add that user to a group with the following permissions: Can View and Can Scan, and the following access object: All Assets.

  • Generate API keys.

Create a User

To create a user:

  1. Navigate to Settings.

  2. Choose Access Control.

  3. Choose Users | Create User.

  4. Enter the FULL NAME, USERNAME, EMAIL, PASSWORD, and VERIFY PASSWORD.

  5. Select Administrator from the ROLE dropdown.

  6. Select API Key for AUTHENTICATION.

  7. Click Next.

  8. Select All Users from the USER GROUPS dropdown.

  9. Click Next.

  10. Click Save.

  11. Log in to Tenable.io as that user and accept the license agreement.

Add Permissions

To add permissions and groups for the user:

  1. Navigate to Settings | Access Control.

  2. Choose Permissions | Create Permission.

  3. Enter a PERMISSION NAME and select the user from the USERS drop down.

  4. Select the All Users group from the GROUPS dropdown.

  5. Select Can View and Can Scan from the PERMISSIONS dropdown.

  6. Select All Assets from the OBJECTS dropdown.

  7. Click Save.

Generate API Keys

To generate API keys:

  1. Navigate to Settings and choose My Account.

  2. Select API KEYS.

  3. Click Generate.

  4. Click Continue.

  5. Copy the ACCESS KEY and SECRET KEY, which will be used to add the connector in Stellar Cyber.

    Store the API keys in a safe location. They cannot be retrieved later although they can be regenerated.

Adding the Connector in Stellar Cyber

See Tenable for information on configuring a Tenable.io scanner.

To add a new Tenable.io vulnerability scanner connector in Stellar Cyber:

  1. Log in to Stellar Cyber.

  2. Click System | Connectors (under Integrations). The Connector Overview appears.

  3. Click Create. The General tab of the Add Connector screen appears. The information on this tab cannot be changed after you add the connector.

    The asterisk (*) indicates a required field.

  4. Choose Vulnerability Scanner from the Category drop-down.

  5. Choose Tenable.io from the Type drop-down.

  6. For this connector, the supported Function is Collect, which is enabled already.

  7. Enter a Name.

    This field does not accept multibyte characters.

  8. Choose a Tenant Name. The Interflow records created by this connector include this tenant name.

  9. Choose the device on which to run the connector.

    • Certain connectors can be run on either a Sensor or a Data Processor. The available devices are displayed in the Run On menu. If you want to associate your collector with a sensor, you must have configured that sensor prior to configuring the connector or you will not be able to select it during initial configuration. If you select Data Processor, you will need to associate the connector with a Data Analyzer profile as a separate step. That step is not required for a sensor, which is configured with only one possible profile.

    • If the device you're connecting to is on premises, we recommend you run on the local sensor. If you're connecting to a cloud service, we recommend you run on the DP.

  10. (Optional) When the Function is Collect, you can apply Log Filters. For information, see Managing Log Filters.

  11. Click Next. The Configuration tab appears.

    The asterisk (*) indicates a required field.

  12. Enter the Access Key you noted above.

  13. Enter the Secret Key you noted above.

  14. Choose the Content Type. The logs for Scans and Vulnerabilities are supported. Select Scans to collect Security Scan Reports and Security Scan Events.

  15. Enter the Interval, which is the time between polls of the scanner.

  16. Choose Asset Synchronization to share information bi-directionally. If you enable this, Stellar Cyber shares MAC-identified assets with Tenable.io.

  17. Click Next. The final confirmation tab appears.

  18. Click Submit.

    To pull data, a connector must be added to a Data Analyzer profile if it is running on the Data Processor.

  19. If you are adding rather than editing a connector with the Collect function enabled and you specified for it to run on a Data Processor, a dialog box now prompts you to add the connector to the default Data Analyzer profile. Click Cancel to leave it out of the default profile or click OK to add it to the default profile.

    • This prompt only occurs during the initial create connector process when Collect is enabled.

    • Certain connectors can be run on either a Sensor or a Data Processor, and some are best run on one versus the other. In any case, when the connector is run on a Data Processor, that connector must be included in a Data Analyzer profile. If you leave it out of the default profile, you must add it to another profile. You need the Administrator Root scope to add the connector to the Data Analyzer profile. If you do not have privileges to configure Data Analyzer profiles, a dialog displays recommending you ask your administrator to add it for you.

    • The first time you add a Collect connector to a profile, it pulls data immediately and then not again until the scheduled interval has elapsed. If the connector configuration dialog did not offer an option to set a specific interval, it is run every five minutes. Exceptions to this default interval are the Proofpoint on Demand (pulls data every 1 hour) and Azure Event Hub (continuously pulls data) connectors. The intervals for each connector are listed in the Connector Types & Functions topic.

    The Connector Overview appears.

The new connector is immediately active and collects logs for the previous 30 days.

Testing the Connector

When you add (or edit) a connector, we recommend that you run a test to validate the connectivity parameters you entered. (The test validates authentication and connectivity).

  1. Click System | Connectors (under Integrations). The Connector Overview appears.

  2. Locate the connector by name that you added, or modified, or that you want to test.

  3. Click Test at the right side of that row. The test runs immediately.

    Note that you may run only one test at a time.

Stellar Cyber conducts a basic connectivity test for the connector and reports a success or failure result. A successful test indicates that you entered all of the connector information correctly.

To aid troubleshooting your connector, the dialog remains open until you explicitly close it by using the X button. If the test fails, you can select the  button from the same row to review and correct issues.

The connector status is updated every five (5) minutes. A successful test clears the connector status, but if issues persist, the status reverts to failed after a minute.

Repeat the test as needed.

ClosedDisplay sample messages...

Success !

Failure with summary of issue:

Show More example detail:

If the test fails, the common HTTP status error codes are as follows:

HTTP Error Code HTTP Standard Error Name Explanation Recommendation
400 Bad Request This error occurs when there is an error in the connector configuration.

Did you configure the connector correctly?
401 Unauthorized

This error occurs when an authentication credential is invalid or when a user does not have sufficient privileges to access a specific API.

Did you enter your credentials correctly?

Are your credentials expired?

Are your credentials entitled or licensed for that specific resource?
403 Forbidden This error occurs when the permission or scope is not correct in a valid credential.

Did you enter your credentials correctly?

Do you have the required role or permissions for that credential?

404 Not Found This error occurs when a URL path does not resolve to an entity. Did you enter your API URL correctly?
429 Too Many Requests

This error occurs when the API server receives too much traffic or if a user’s license or entitlement quota is exceeded.

The server or user license/quota will eventually recover. The connector will periodically retry the query.

If this occurs unexpectedly or too often, work with your API provider to investigate the server limits, user licensing, or quotas.

For a full list of codes, refer to HTTP response status codes.

Verifying Ingestion

To verify ingestion:

  1. Click Investigate | Threat Hunting. The Interflow Search tab appears.

  2. Change the Indices for the type of content you collected:

    • For Scans and Vulnerabilities, change the Indices to Scans.

    • For Vulnerabilities only, change the Indices to Assets.

    The table immediately updates to show ingested Interflow records.

    Search for the msg_class values listed in Locating Records at the top of this page.