Configuring Tenable Cloud Security Connectors

This connector allows Stellar Cyber to ingest logs from Tenable Cloud Security and add the records to the data lake. It integrates with the Tenable Cloud Security API to ingest findings data.

The Tenable Cloud Security GraphQL API has rate limit of 50 calls per second (per API token).

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 Cloud Security

Capabilities

  • Collect: Yes

  • Respond: No

  • Native Alerts Mapped: No

  • Runs on: DP

  • Interval: Configurable

Collected Data

Content Type

Index

Locating Records

Findings

Syslog

msg_class:

tenable_cloud_security_findings

msg_origin.source:

tenable_cloud_security

msg_origin.vendor:

tenable

msg_origin.category:

cloudsec

Domain

<Base URL> or <Custom URL>

where <Base URL> or <Custom URL> is a variable from the configuration of this connector

Response Actions

N/A

Third Party Native Alert Integration Details

N/A

Required Credentials and Configurations

  • Base URL or Custom URL and API Token

Adding a Tenable Cloud Security Connector

To add a Tenable Cloud Security connector:

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

Obtaining Tenable Cloud Security Credentials

Before you configure the connector in Stellar Cyber, you must obtain the following Tenable Cloud Security credentials:

  • Base URL—The base URL for API access.

  • Custom URL—The custom URL, which you can enter in the Custom URL field if a URL is not available in the Base URL dropdown menu.

  • API Token—The credential for the Tenable Cloud Security API.

Generating an API Token

Follow the guidance in the Tenable Cloud Security documentation.

  1. Log in with a valid user account and appropriate permissions to Tenable Cloud Security.

  2. Navigate to Integrations.

  3. Click API Tokens.

  4. Select Click to generate an API token.

  5. Use the copy button to copy the API token.

    Store the API token in a safe location.

Adding the Connector in Stellar Cyber

To add a Tenable Cloud Security connector in Stellar Cyber:

  1. Log in to Stellar Cyber.

  2. Click System | INTEGRATIONS | Connectors. The Connector Overview appears.

  3. Click Create and select Connector.

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

  4. Choose Cloud Security from the Category dropdown.

  5. Choose Tenable Cloud Security from the Type dropdown.

    The asterisk (*) indicates a required field.

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

  7. Enter a Name.

    Notes:
    • This field does not accept multibyte characters.
    • It is recommended that you follow a naming convention such as tenantname-connectortype.

  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.

  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. Select the Base URL from the dropdown menu.

  13. Or, select Custom URL from the Base URL dropdown menu and enter a URL in the Custom URL field.

  14. Enter the API Token you noted above in Obtaining Tenable Cloud Security Credentials.

  15. Choose the Content Type you would like to collect. The logs for Findings are supported.

  16. Choose the Interval (min). This is how often the logs are collected.

  17. (Optional) Click Disable SSL Certificate Verification if you want to disable SSL certificate verification. Only disable SSL certificates if you have a reason to, otherwise, it is not a good security practice.

  18. Click Next. The final confirmation tab appears.

  19. Click Submit.

The new connector is immediately active.

Testing the Connector

In addition to testing for connectivity, the Test button for the Tenable Cloud Security connector tests that the Base URL or Custom URL and API Token are correct and data requests for the requested content type returns successful responses.

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).

For connectors running on a sensor, Stellar Cyber recommends that you allow 30-60 seconds for new or modified configuration details to be propagated to the sensor before performing a test.

  1. Click System | INTEGRATIONS | Connectors. 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. Select Threat Hunting.

    The Interflow Search tab appears.

  2. Change the Indices to Syslog.

    The table immediately updates to show ingested Interflow records.