[VPN] How to set up a VPN server on ASUS router – OpenVPN



What is a VPN?

Virtual Private Network : Virtual private networks encrypt your network connection, ensuring the secure transmission of important information and preventing your information from being stolen. Allows remote consumers (VPN clients) to securely connect to VPN servers.

VPN has a variety of connection methods, this article with Asus router support OpenVPN server to do the setup related to the introduction, and two other supported servers (PPTP VPN,IPSec VPN) settings can refer to the following related FAQ. Recommendations can be selected based on the type of VPN supported by your appliance.

For PPTP VPN server settings, please refer to: https://www.asus.com/support/FAQ/114892

For IPSec VPN server settings, please refer to: https://www.asus.com/support/FAQ/1044190

The VPN servers supported by ASUS wireless routers vary by model, and it is recommended that you refer to the product user manual or the product specifications page to confirm that your router is supported.



Please follow below steps to create your own OpenVPN server :

Step1.  Connect your computer to the router via wired or WiFi connection and enter your router LAN IP or router URL http://www.asusrouter.com to the WEB GUI.


           Note: Please refer to How to enter the router setting page(Web GUI) (ASUSWRT)? to learn more.


Step2. Key in your router's username and password to log in.


          Note: If you forgot the username and/or password, please restore the router to the factory default status and setup.

                     Please refer to [Wireless Router] How to reset the router to factory default setting?  for how to restore the router to default status.


Step3. Go to [VPN] > [VPN Server] > [OpenVPN], Set Enable OpenVPN Server as [ON]          



Step4. General Settings

        a. VPN Details: Default as [General]

        b. Server Port: Set port number to bind. The current default of 1194 represents the official IANA port number assignment for OpenVPN.

        c. RSA Encryption: Default as [1024 bit]。

        d. Client will use VPN to access: Default as[Local network only]. When the VPN client connects to the VPN server, it can only access the LAN under the VPN server.

      [Internet and local network]: When the client connects to the VPN server, it can access the LAN under the VPN server at the same time, and can also access the Internet through the VPN server.



Step5. Enter your username and password in blank column, and click button to create a new account for your OpenVPN server.



Step6. The password is automatically hidden, click [Apply] button to save OpenVPN settings. 



Export OpenVPN configuration file

 It will take a few minutes to initialinze the settings of OpenVPN server and generate a openv VPN configuration file. After that, please click [Export] button to save the ovpn configuration file named "client.ovpn".

 Now you finish OpenVPN server side setting. Please turn to client side to build your OpenVPN client connection.

 For ASUS Router VPN client settings, please refer to [VPN] How to set up VPN Client in ASUS Router (Web GUI)? 






1. How many connection clients are supported?

    OpenVPN can support more than 10 client connection, but the stability depends on the bandwidth of the router.


2. How to save OpenVPN server configuration file?

   When you would restore or replace router, you can keep original certification of OpenVPN server via Export Current Certification and import it to new router.



3. Where is the advanced setting of OpenVPN?

  We provide more advanced settings for OpenVPN. If necessary, please go to [VPN Details] >[Advanced Settings] page and do further configuration.



4. How to modify the Keys & Certificate of OpenVPN server?

   Go to [VPN Details] >[Advanced Settings] page


   Click to [Content modification of Keys & Certificate]


   Modify the content and click [Save] button to save settings. 


    Click [Apply] button to save OpenVPN settings. 




How to get the (Utility / Firmware)?

You can download the latest drivers, software, firmware and user manuals in the ASUS Download Center.

If you need more information about the ASUS Download Center, please refer this link.