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Support Center / Setup and use / How to set up ProtonVPN on Synology DSM

How to set up ProtonVPN on Synology DSM

This article provides instructions for setting up ProtonVPN on a Synology NAS device running the DiskStation Manager (DSM)  operating system. It also includes an optional guide for sharing the Synology’s VPN connection with other devices on your LAN network.

Prerequisites

  • Synology DSM 6.2.x up and running.
  • A computer on the LAN network to access the Synology frontend.
  • Any router OpenVPN configuration file. The configuration files can be downloaded in the Downloads category on your account.

Step one: add VPN connection

In this step we are going to create the VPN connection and bring it up:

  • Go to Control panel → Network → Network Interface
  • Click on Create → Create VPN profile

  • Select OpenVPN (via importing a .ovpn file) and click on Next
  • Enter the following:
    • Profile name: a descriptive name for your connection (e.g. ProtonVPN_DE10_UDP)
    • Username: Your ProtonVPN OpenVPN Username
    • Password: Your ProtonVPN OpenVPN Password
    • Import .ovpn file: browse your local hard drive for the file you downloaded from your account page
  • Click on Next.

  • Use default gateway on default network: checked
  • Allow other network devices to connect through this Synology server’s Internet connection: check if you plan to use your Synology as a router for your whole network
  • Reconnect when the VPN connection is lost: checked

  • Click on Apply
  • Now click on General tab
  • Check Manually configure DNS server
  • Enter:
    • Preferred DNS server: 10.1.0.1
    • Alternative DNS server: leave blank (erase the proposed value if any)

  • Click on Apply
  • Go back to Network Interface tab
  • Select Manage → Service Order
  • Verify the VPN connection is the topmost connection in the list

  • Select your newly created VPN connection and click Connect

Your Synology is now connected to ProtonVPN.

Step two (optional): setup the Synology to share the VPN connection

The following steps allow you to connect other devices on your local network to ProtonVPN via the connection we have just created on your Synology. This requires you to connect your Synology between your ISP modem/router and the other networking equipment. Like so:

In this setup we are assuming that your Synology has two interface cards called:
  • LAN 1
  • LAN 2

and the wiring is performed as in the diagram above (LAN 1 connected to ISP router, LAN 2 connected to your internal devices).

  • Go to Control panel → Network → Network Interface
  • Select interface LAN 2 and click on Edit
  • Click on Use manual configuration and enter:
    • IP address: 192.168.100.1
    • Subnet mask: 255.255.255.0
  • Click on Ok

Now let’s setup a DHCP server for your internal network:

  • Click on DHCP server
  • Select LAN 2 and click Edit
  • Enable DHCP server by clicking on the checkbox
  • In Primary DNS enter: 192.168.100.1
  • Now click on Add button in lower left part of the dialog and enter:
    • Start IP address: 192.168.100.10
    • End IP address: 192.168.100.200
    • Netmask: 255.255.255.0
    • Gateway: 192.168.100.1
    • Address lease time: 86400
  • Click on Create
  • Click on the checkbox Enable on the configuration you just created.
  • Click on Ok

Now all the devices connected to LAN 2 port of your Synology are accessing the internet through your ProtonVPN connection.

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