Two-factor Authentication with Quest Defender for SonicWall Global VPN Clients

03/26/2020 68 16004

DESCRIPTION:

Quest Defender enhances security by enabling two-factor authentication & multi-factor authentication to network, web and applications-based resources.  This article describes how to configure Quest Defender to perform two-factor authentication of Global VPN Clients (GVC).

RESOLUTION:

Quest Defender Configuration

Defender installation involves installing the following components:

• Defender Management Console: Installs MMC Snap-ins, Schema updates and a Defender OU in Active Directory Users and Computers.

• Defender Security Server (DSS): Authenticates RADIUS and Defender Agent requests Access Nodes.

• Defender Security Server User License

• Defender Desktop Token License

NOTE: The Screenshots and configuration steps described here are of Defender version 5.7.  Installation of the Quest Defender application is not covered here. Step by step instructions are described in Defender 5.7 Installation Guide.  For the purpose of this article all components are installed in a Windows 2008 server with trial Defender license and tokens.

Defender Security Server configuration

Click on Defender Security Server on the Start menu to open the Defender Security Server Configuration window.

1. On the Active Directory LDAP tab, enter the IP address or hostname of the AD LDAP server

2. Under Port, enter the LDAP port number: 389. Under SSL Port enter the LDAPs port number: 636. This is optional.

3. Under Service Account Credentials, enter the DN of the user. In this example, a user called defender has been created with Domain Admin rights.

4. Click on Apply to save the changes.

On the Test Connection tab, click on the Test button to test the connectivity between DSS and the LDAP server.

In the Service tab, you can stop and restart the Defender Security Server service.

Defender Management Console

The Defender Management Console enables you to create and configure Defender Security Servers. The Defender Security Server is the point in your network where user authentication is performed. If authentication is successful, the user is allowed access to the network.

Open the Defender OU in Active Directory Users and Computers.

Configure RADIUS Payload

The RADIUS Payload is information that is passed from the Defender  Security Server to the Network Access Server where the user authentication attempt originated.

1. Navigate to the RADIUS Payload page 
2. Right click and click on New and select Defender RADIUS Payload to create a new RADIUS Payload.

Configure Security Policy

The security policy is assigned to a user, user group, access node or security  server.

1. Navigate to the Defender | Policies page.

2. Right click and click on New and select Defender Policy to create a Defender Security Policy.

3. The authentication methods selected here are AD password and Token.

4. The Logon Attempts have been set here as 1, this can be changed.

For more information, see Page # 49 of the Defender 5.7 Configuration Guide

Configure Defender Security Servers (DSS)

The Defender Security Server is the point in your network where user authentication is performed. If authentication is successful, the user is allowed access to the network.

1. Navigate to the Defender | Security Servers page.

2. Right click and click on New and select Defender Security Server to create a DSS.

3. The IP Address must be the IP Address of the machine where this Defender Security Server is located. In this example the DSS is the same as the management console.

4. The Defender Security Server (prompts) can be left as it is.

5. Click on OK to save.

6. In the properties of the newly created DSS, click on the Policy tab and click on Select to select the Security Policy created earlier.

7. Click on the RADIUS Payload tab, click on Select to select the RADIUS Payload created earlier.

The indicator light located in the top left hand corner of the Defender Security Server dialog box is red while the Defender Security Server is refreshing  the data. When the Access Nodes has been assigned, a green light is displayed. 

For more information, see Page # 82 of the Defender 5.7 Configuration Guide

Configure Access Node

The Access Node is the point in your network where you need to challenge the  user to verify their identity, for example, a firewall or VPN server. At the access node, the user will be prompted to enter their logon credentials. This may be a user ID, password and token authentication information. The access node sends  the user’s logon credentials to the Defender Security Server for authentication.  If authentication is successful, the user is granted access to the network.

1. Navigate to the Defender | Access Nodes page.

2. Right click and click on New and select Defender Access Node to create a Defender Access Node.

3. Enter the IP address or DNS name of the SonicWall X0 interface. 

4. Set Auth Port as 1812, which is the default RADIUS port.

5. Click on OK to save.

6. In the properties of the newly created Access Node, under Node Type, select Radius Agent.

7. In the Shared Secret field, enter a secret. This must be identical to the Shared Secret in the SonicWall RADIUS configuration.

8. Set User ID as SAM Account Name.

9. Under Assigned to, click on Assign to select the DSS earlier created.

10. Under the Members tab, specify the users and/or groups of users who will be authenticated by the Defender Security Server via this Access Node

11. Navigate to the Policy tab.
12. Click on Select to select the Security Policy created earlier.

13. Navigate to the RADIUS Payload tab.
14. Click on Select to select the RADIUS Payload created earlier.

For more information, see Page # 24 of the Defender 5.7 Configuration Guide

Defender Tokens

The Defender token serial number is used to associate the token with a user and can be used for later reference or for tracking purposes. A list of serial numbers for the tokens that you have purchased is supplied as part of your Defender package. The serial number is also located on the back of hardware tokens. 

For importing Defender Token Serial Numbers, refer page # 102 of the Defender Configuration Guide .

Assigning Security Policy to a User

To assign a Security Policy to a user, perform the following steps:

1. From Active Directory Users and Computers, select Users.
2. Right-click the required user or group and select Properties from the menu.
3. In the Properties window, navigate to the Policy table
4. In the Policy tab, click on Select and select the Security Policy created earlier.

Assign Hardware / Software Token

Depending on your installation, install/configure hardware or software token. Refer the following Quest Defender documents:

Defender Token Administration Guide
Defender Hardware Token User Guide
Quest Soft Token for Windows Desktop User Guide

Select the Defender tab and click on Add to add a token.

For more information, see Page # 119 of the Defender 5.7 Configuration Guide

SonicWall RADIUS Configuration

1. Login to the SonicWall management GUI.

2. Navigate to the Users | Settings page.

3. Select RADIUS as the authentication method and click on Configure.

4. Configure the RADIUS settings as follows:

Connecting the SonicWall Global VPN Client with AD Username/Password and Windows Desktop Token.

1. Start the GVC client connection.

2. Enter your AD username and password at the authentication prompt.

3. When prompted to enter Response, copy the SNK Challenge.

4. Enter Challenge in the Defender Desktop Token app.

5. Click on Get Response and copy it to clipboard.

6. Enter Response.