• SonicOS 7.1
• About SonicOS
  • Working with SonicOS
  • SonicOS Workflow
  • How to Use the SonicOS Administration Guides
  • Guide Conventions
• IPSec VPN Overview
  • About Virtual Private Networks
  • VPN Types
    • IPsec VPN
    • DHCP over VPN
    • L2TP with IPsec
    • SSL VPN
  • VPN Security
    • About IKEv1
    • About IKEv2
    • Mobility and Multi-homing Protocol for IKEv2 (MOBIKE)
    • About IPsec (Phase 2) Proposal
    • About Suite B Cryptography
  • VPN Base Settings and Displays
    • Policies
    • Active Tunnels
    • Settings
  • IPv6 VPN Configuration
• Site to Site VPNs
  • Planning Site to Site Configurations
  • General VPN Configuration
    • Configuring Settings on the General Tab
    • Configuring Settings on the Network Tab
    • Configuring Settings on the Proposals Tab
    • Configuring Settings on the Advanced Tab
  • Managing GroupVPN Policies
    • Configuring IKE Using a Preshared Secret Key
    • Configuring IKE Using 3rd Party Certificates
    • Downloading a GroupVPN Client Policy
  • Creating Site to Site VPN Policies
    • Configuring with a Preshared Secret Key
    • Configuring with a Manual Key
    • Configuring with a Third-Party Certificate
    • Configuring the Remote SonicWall Network Security Appliance
    • Configuring VPN Failover to a Static Route
• VPN Auto Provisioning
  • About VPN Auto Provisioning
    • Defining VPN Auto Provisioning
    • Benefits of VPN Auto Provisioning
    • How VPN Auto Provisioning Works
      • About Establishing the IKE Phase 1 Security Association
      • About Establishing IKE Phase 2 using a Provisioned Policy
  • Configuring a VPN AP Server
    • Starting the VPN AP Server Configuration
    • Configuring VPN AP Server Settings on General
    • Configuring VPN AP Server Settings on Network
    • Configuring Advanced Settings on Proposals
    • Configuring Advanced Settings on Advanced
  • Configuring a VPN AP Client
• Rules and Settings
  • Adding a Tunnel Interface
    • Creating a Static Route for the Tunnel Interface
  • Route Entries for Different Network Segments
  • Redundant Static Routes for a Network
• Advanced
  • Configuring Advanced VPN Settings
  • Configuring IKEv2 Settings
  • Using OCSP with SonicWall Network Security Appliances
    • OpenCA OCSP Responder
    • Loading Certificates to Use with OCSP
    • Using OCSP with VPN Policies
• DHCP over VPN
  • DHCP Relay Mode
  • Configuring the Central Gateway for DHCP Over VPN
  • Configuring DHCP over VPN Remote Gateway
  • Current DHCP over VPN Leases
• L2TP Servers and VPN Client Access
  • Configuring the L2TP Server
  • Viewing Currently Active L2TP Sessions
  • Configuring Microsoft Windows L2TP VPN Client Access
  • Configuring Google Android L2TP VPN Client Access
• AWS VPN
  • Overview
  • Creating a New VPN Connection
  • Reviewing the VPN Connection
    • Configuration on the Firewall
    • Configuration on Amazon Web Services
  • Route Propagation
  • AWS Regions
  • Deleting VPN Connections
• SonicWall Support
  • About This Document

Configuring Microsoft Windows L2TP VPN Client Access

This provides an example for configuring L2TP client access to the WAN GroupVPN SA using the built-in L2TP Server and Microsoft's L2TP VPN Client.

SonicOS supports only X.509 certificates for L2TP clients; PKCS #7 encoded X.509 certificates are not supported in SonicOS for L2TP connections.

To enable Microsoft L2TP VPN Client access to the WAN GroupVPN SA

1. Navigate to the NETWORK | VPN > Rules and Settings page.
2. For the WAN GroupVPN policy, click the Edit icon in the Configure column.
3. On the General screen, select IKE using Preshared Secret for the Authentication Method.
4. Enter a shared secret passphrase in the Shared Secret field to complete the client policy configuration.
5. Click Save.
6. Navigate to the NETWORK | IPSec VPN > L2TP Server page.
7. In the L2TP Server section, select Enable L2TP Server.
8. Click Configure.

9. Provide the following L2TP Server Settings:

   • Keep alive time (secs): 60
   • DNS Server 1: 199.2.252.10 (or use your ISP’s DNS)
   • DNS Server 2: 4.2.2.2 (or use your ISP’s DNS)
   • DNS Server 3: 0.0.0.0 (or use your ISP’s DNS)
   • WINS Server 1: 0.0.0.0 (or use your WINS IP)
   • WINS Server 2: 0.0.0.0 (or use your WINS IP)
10. Click L2TP Users Settings.

11. Set the following options:

    • IP address provided by RADIUS/LDAP Server if a RADIUS/LDAP Server provides IP addressing information to the L2TP clients. If the L2TP Server provides IP addresses, select Use the Local L2TP IP pool.

    • Use the Local L2TP IP pool: Enabled (selected; the default)
    • Start IP: 10.20.0.1 (use your own IP)
    • End IP: 10.20.0.20 (use your own IP)
12. Select Trusted Users from the User group for L2TP users drop-down menu.
13. Click Save.
14. Navigate to the DEVICE | Users > Local Users & Groups page.
15. Click Local Users.

16. Click +Add User to display the User Settings dialog.

    

17. Specify a user name and password in the Name, Password, and Confirm Password fields.

18. Click Save.

    By editing the VPN > LAN access rule or another VPN access rule (under POLICY | Rules and Policies > Access Rules), you can restrict network access for L2TP clients. To locate a rule to edit, select the All Types view on the Access Rules table and look at the Source column for L2TP IP Pool.

    1. On your Microsoft Windows computer, complete the following L2TP VPN Client configuration to enable secure access:

    2. Navigate to the Start > Control Panel > Network and Sharing Center.

    3. Open the New Connection Wizard.

    4. Choose Connect to a workplace.

    5. Click Next.

    6. Choose Virtual Private Network Connection. Click Next.

    7. Enter a name for your VPN connection. Click Next.

    8. Enter the Public (WAN) IP address of the firewall. Alternatively, you can use a domain name that points to the firewall.

    9. Click Next, and then click Finish.

    10. In the Connection window, click Properties.

    11. Click Security.

    12. Click on IPSec Settings.

    13. Enable Use preshared key for authentication.

    14. Enter your preshared secret key and click OK.

    15. Click Networking.

    16. Change Type of VPN from Automatic to L2TP IPSec VPN.

    17. Click OK.

    18. Enter your XAUTH username and password.

    19. Click Connect.

19. Verify your Microsoft Windows L2TP VPN device is connected by navigating to the NETWORK | IPSec VPN > Rules and Settings page. The VPN client is displayed in the Currently Active VPN Tunnels section.