OpenVPN router setups
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How to set up OpenVPN on an Asus Merlin router

Updated:

In this tutorial, you will learn how to configure the Surfshark VPN tunnel on your Asus Merlin router.

You need to have a router running Asus Merlin firmware and an active Surfshark subscription, which you can purchase on Surfshark's pricing page.

 

Credentials and server selection

Before setting up the router, you will need to obtain the credentials for the manual setup and select a server to connect to.
 

NOTE: These are not your regular credentials, such as your email and password.
 

  1. Head to the Surfshark login page and log in. Then, click on VPN -> manual setup.



  2. Select set up manually.



  3. Choose the OpenVPN protocol.



  4. Once there, make sure that you are in the Credentials tab and click on Generate credentials. 



    NOTE: Keep this tab open or save the credentials, as we'll need them later.

 

Choose a Surfshark VPN server

  1. Head to the Locations tab and locate the server that you wish to connect to.


     
  2. Click on the download icon to the right of the server name.



  3. Click on download UDP. 



    NOTE: In this example, we will be using UDP, however, feel free to use TCP. You can check out the differences here.

 

Configure the OpenVPN client

  1. Log in to your Asus Merlin router using the following IP: 192.168.1.1

    NOTE: If you can't log in, check your router's backside or the user's manual to find the default IP address and credentials. Usually, the username and password fields are both admin.
    Merlin4.png
  2. Go to Advanced Settings > VPN
    Merlin5.png
  3. Go to the VPN Client tab (or OpenVPN Clients in different Merlin versions). Click the OpenVPN button on the right side of the page.
    Merlin6.png

  4. Click Choose File.
    Merlin7.png

  5. Navigate to the Downloads folder on your PC, and choose the Surfshark configuration file (refer to Choose a Surfshark server section in this article). Click Open.
    Merlin8.png

  6. Click the Upload button to insert the configuration file.
    Merlin9.png

  7. Set all settings as in the screenshot below, and then click Apply. For the Username and Password fields, use Surfshark service credentials (refer to Get your credentials section in this article).
    Merlin10.png

  8. Turn the Service state switch from OFF to ON.
    Merlin11.png

 

Ensure the connection is successful

We always recommend checking if Surfshark VPN is working after setting it up for the first time. You can easily do it by performing Surfshark IP leak test and a DNS leak test. For your convenience, both are available on our website.




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