Configuring F5 BIG-IP Firewall Connectors

You can connect Stellar Cyber to firewalls so that you can quickly and easily implement firewall rules on those firewalls from within Stellar Cyber, while you are threat hunting. You can configure firewall actions or manually trigger a firewall action from the event display. For either action you must already have your firewall connected.

Connector Overview: F5 BIG-IP Firewall

Capabilities

  • Collect: No

  • Respond: Yes

  • Native Alerts Mapped: No

  • Runs on: DP or Sensor

  • Interval: N/A

Collected Data

N/A

Domain

https://<Device IP Address>:<Device Port>

where <Device IP Address> and <Device Port> are variables from the configuration of this connector

Response Actions

Action

Required Fields

Block IP

srcip or dstip

Third Party Native Alert Integration Details

N/A

Required Credentials

  • User Name, Password, Device IP Address, Source Address List, Destination Address List, and Device Port

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Adding an F5 BIG-IP Firewall Connector

To add a new F5 BIG-IP firewall connector:

  1. Create firewall rules
  2. Add the connector in Stellar Cyber
  3. Test the connector

You can also send F5 BIG-IP telemetry data to a sensor using API calls.

Creating Firewall Rules

To trigger firewall actions you must have rules on your F5 BIG-IP firewall that you can trigger. We suggest two rules, one to block outgoing destinations and one to block incoming.

On your F5 BIG-IP firewall:

  1. Create two address lists. You will use these when adding the connector in Stellar Cyber. When a firewall action is triggered, Stellar Cyber adds the IP address to one of these lists. For our examples, we used dst_group and src_group.

  2. Create a deny policy to all destinations with the src_group as the source.

  3. Create a deny policy with the dst_group as the destination and all sources.

The Block IP action adds an IP address to the corresponding address list. The Unblock IP action removes the IP address from the corresponding address list.

Adding the Connector in Stellar Cyber

To add a new F5 BIG-IP firewall connector in Stellar Cyber:

  1. Log in to Stellar Cyber.

  2. Click System | Integration | Connectors. 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 Firewall from the Category drop-down.

  5. Choose F5 BIG-IP Firewall from the Type drop-down.

  6. For this connector, the supported Function is Respond, 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.

  10. Click Next. The Configuration tab appears.

    The asterisk (*) indicates a required field.

  11. Enter the User Name to log in to the firewall. This user must have access rights to modify a rule.

  12. Enter the Password to log in to the firewall.

  13. Enter the Device IP Address. This is the management IP address for the firewall.

  14. Enter the Source Address List to which to add the IP address. This is the source address list you created that is used to include IP addresses that should be blocked as source.

  15. Enter the Destination Address List to which to add the IP address. This is the destination address list you created that is used to include IP addresses that should be blocked as destination.

  16. Enter the Device Port. This is the API port.

  17. Click Next. The final confirmation tab appears.

  18. Click Submit.

The new firewall connector is immediately active.

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 only the authentication / connectivity; it does not validate data flow).

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 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: