Configuring Fortigate 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: Fortigate Firewall

               Let us know if you find the above overview useful.

Adding a Fortigate Firewall Connector

To add a Fortigate firewall connector:

1. Create API User
2. Create firewall rules
3. (Optional) Obtain an API Token
4. Add the connector in Stellar Cyber
5. Test the connector

Creating API User

To create an API user, first create an Admin Profile, then create the API user either for a single VDOM or multiple VDOMs.

Creating Admin Profile

1. Navigate to Admin Profiles under System.

2. Click Create New.

   

3. For the Access Permissions, next to Firewall, click Custom.

4. For the Firewall Address, click Read/Write.

   

5. Click OK.

Creating an API User for a Single VDOM

To create an API user for a single VDOM:

1. Navigate to Administrators under System.

2. Click Create New and select Administrators.

   

3. In the New Administrator window, enter a Username, Password, and Confirm Password.

   

4. For the Administrator Profile, select the profile you previously created.

5. Click OK.

Creating an API User for Multiple VDOMs

To create an API user for multiple VDOMs, follow the initial steps in Creating an API User for a Single VDOM:

1. In the New Administrator window, in addition to selecting the Administrator Profile you previously created, also select Virtual Domains.

   

2. Click OK.

Creating Firewall Rules

To trigger firewall actions, you must have rules on your Fortigate firewall that you can trigger. Create the rules with a user that has access rights to modify rules.

Login to Fortigate with a user that you have previously logged in with. Or, if you have created a new user, log in to Fortigate as that user and accept the license agreement before starting this procedure.

To create the rules:

1. Create two address groups. 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 groups. The following is an example of the source address group named Stellar-Src-Group:

   

   The following is an example of the destination address group named Stellar-Dst-Group:

   

2. Click OK to save each address group.

3. Create two deny policies. The first policy is an example of an Inbound Deny rule named Stellar_Inbound with the following settings:

   • Incoming Interface: Internet (wan1)
   • Outgoing Interface: internal
   • Source = Stellar-Src-Group
   • Destination = all
   • Action = DENY

   

   When there is a Block IP action from an alert and the direction is inbound, the IP address will be added in the Source address group to the firewall (Stellar-Src-Group in this example).

4. The second policy is an example of an Outbound Deny rule named Stellar_Outbound with the following settings:

   • Incoming Interface: internal
   • Outgoing Interface: Internet (wan1)
   • Source = all
   • Destination = Stellar-Dst-Group
   • Action = DENY

   

   When there is a Block IP action from an alert and the direction is outbound, the IP address will be added in the Destination address group to the firewall (Stellar-Dst-Group in this example).

5. Click OK to save each rule.

Adding the Connector in Stellar Cyber

To add a new Fortigate 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 Fortigate 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.

   • 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. Click Next. The Configuration tab appears.

    

    The asterisk (*) indicates a required field.

11. Choose the Auth Method to use API Token or User Name / Password.

    For API Token authentication, enter the API Token you noted above in (Optional) Obtaining an API Token.

    For User Name / Password authentication:

    

    The asterisk (*) indicates a required field.

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

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

       The password should not include non-ASCII special characters.

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

13. Enter the Device Port. The default is 443.

14. Enter the Source IP Group to which to add the IP address. This is the source address group you created above in Creating Firewall Rules.

15. Enter the Destination IP Group to which to add the IP address. This is the destination address group you created above in Creating Firewall Rules.

16. Enter the Virtual Domain Name. This is the where the rules were created.

    Virtual Domains (VDOMs) are used to divide a Fortigate into two or more virtual units that function independently. By default, the management VDOM is root.

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).

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.