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How to set up VPN Unlimited on Synology using L2TP protocol

Synology NAS is a network-attached storage device with a variety of functions including backing up computer drive and managing and storing media files. Your Synology NAS can be covered with VPN protection in 2 ways: 

  1. Set up VPN on your router and connect Synology NAS to this router. Explore the Routers section of our Manuals page for the relevant guides.
  2. Set up VPN connection on your Synology NAS. This tutorial will walk you through the steps to perform L2TP VPN setup on Synology NAS based on DiskStation Manager (DSM) 6.1 version. For easy navigation through this manual, see the contents below:

  1. Generate VPN configurations for L2TP connection
  2. Set up Synology VPN client
  3. Turn off IPv6 on your Synology NAS
  4. Connect to the VPN server on Synology NAS
  5. Disconnect from the VPN server on Synology NAS

Generate VPN configurations for L2TP connection

 

Before you start setting up VPN on Synology NAS using L2TP, you need to generate the required VPN configurations in your User Office. Check out the guide How to manually create VPN configurations for detailed instructions. 

The VPN configurations for L2TP protocol will include chosen VPN server domain name, pre-shared key (psk), login, and password.

Set up Synology VPN Client

  1. Sign in to your Synology and open the Control Panel.
Synology VPN setup - control panel
  1. In the Connectivity section, click on Network
How to setup VPN on Synology - Control panel> Connectivity>Network
  1. Proceed to the Network Interface tab and press Create > Create VPN Profile.
Setting up VPN on Synology NAS: Create VPN profile
  1. On the Create Profile screen with a variety of VPN connection methods, choose the L2TP/IPSec option and press Next
Setup Synology VPN - L2TP connection
  1. To fill out the fields of the General Settings screen, you’ll need the manual VPN configurations you’ve generated before: 

    • Profile name: Type a custom name for this connection, for example VPN_Unlimited. 
    • Server address: Paste the VPN server address from the Domain name field of your manual configurations.
    • User name: Paste your login from the Global Config section.
    • Password: Enter the password from the Global Config section.
    • Pre-shared key: Insert the key from the psk field of your manual VPN configurations.

 

Synology VPN setup - General L2TP settings
  1. Click Next.
How to set up VPN on Synology - fill in general setings and press next

7. On the Advanced Settings screen, select MS CHAP v2 authentication and check the box in front of the following fields:

    • Use default gateway on remote network
    • Server is behind NAT device
    • Reconnect when the VPN connection is lost
Synology VPN setup - Advanced L2TP settings
  1. Click Apply.
How to setup VPN on Synology - Apply settings and create L2TP VPN profile

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Turn off IPv6 on your Synology NAS

 

Before you enable the VPN connection, we recommend to turn off IPv6 on your Synology NAS. This will help you avoid IPv6 traffic leaks outside the VPN tunnel.  

To do this, follow the few simple steps below:

  1. Navigate to Control Panel > Network > Network Interface.
  2. Click on the LAN menu to expand it.
Disabling IPv6 on your Synology NAS in Network Interface > LAN
  1. Click Edit.
Disabling IPv6 on Synology. Edit LAN settings
  1. Navigate to the IPv6 tab.
Disabling IPv6 on your Synology in Network Interface > LAN > IPv6 tab
  1. In the IPv6 Setup field, select Off and click OK.
VPN on Synology. Disabling IPv6: select Off in IPv6 setup
VPN on Synology, disabling IPv6
  1. After you disable IPv6, reboot your Synology.

 

Connect to the VPN server on Synology NAS

 

The VPN profile you’ve just created will appear on the Network Interface window. To establish connection with the VPN server, click on your new VPN Profile and press Connect

 

Synology VPN client - how to connect to VPN server
How to setup VPN on Synology - VPN profile, disconnected status

That’s it! The Synology VPN setup is complete and your Synology NAS traffic is now protected by VPN Unlimited.

Disconnect from the VPN server on Synology NAS


To disconnect from the VPN server on your Synology, navigate to Control Panel > Network > Network Interface. Click on the relevant VPN profile and press Disconnect.

Synology L2TP VPN setup - VPN Unlimited client connected
Synology VPN setup - Disconnect from VPN server

Want to set up VPN connection on another device? Check out our manuals to find the guide you need or contact our 24/7 customer support for assistance.

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Get VPN Unlimited, set it up on your Synology NAS, and figure out what does top-notch privacy mean.