L2TP over IPsec VPN between DrayTek Routers

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This note is going to demonstrate how to establish L2TP over IPsec between two Vigor Routers with the following topology.

VPN Server Setup

1. Set up IPsec pre-shared key, go to VPN and Remote Access >> IPsec General Setup, type Pre-Shared Key and confirm it, then click OK to apply.

a screenshot of DrayOS VPN profile IPsec General Key

2. Set up VPN profile, go to VPN and Remote Access >> LAN to LAN and click an available index to create a VPN profile.

a screenshot of DrayOS VPN profile list

3. Give a profile name and enable it, select "Dial-in" for Call Direction.

a screenshot of DrayOS VPN profile

4. In Dial-In Settings, select "L2TP" and set IPsec Policy to "Must," type Username and Password.

a screenshot of DrayOS VPN profile

5. In TCP/IP Network Settings, enter the LAN IP and Mask of VPN client at Remote Network IP/ Mask. Click OK to apply.

a screenshot of DrayOS VPN profile

VPN Client Setup

6. Set up VPN profile on VPN Client Router, go to VPN and Remote Access >> LAN to LAN and click an available index to create a VPN profile.

a screenshot of DrayOS VPN profile list

7. In Common Settings, give a profile name and enable it, select "Dial-out" for Call Direction.

a screenshot of DrayOS VPN profile

8. In Dial-Out Setting,

  1. Select "L2TP" and set IPsec Policy to "Must",
  2. Enter the IP or domain name of the VPN server in Server IP/Host Name for VPN
  3. Type the Username, Password, and the IKE Pre-Shared Key that has configured on VPN server.
a screenshot of DrayOS VPN profile

9. In TCP/IP Network Settings, type the LAN IP and Mask of VPN Server at Remote Network IP/ Mask. Click OK to apply.

a screenshot of DrayOS VPN profile

Establishing the VPN tunnel

10. Now go to VPN and Remote Access >> Connection Management of the VPN Client router, and click Dial to initiate the VPN. After the VN tunnel established successfully, we can find the VPN status below.

a screenshot of DrayOS VPN connection Status

Published On: May 19, 2016 

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