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OpenVPN client setup for Asus RT-N16 router with Tomato firmware

This tutorial guide will walk you through the  steps required for Tomato VPN client setup using the OpenVPN protocol. The following router was taken as an example: Asus RT-N16 with Tomato Firmware 1.28.0000 MIPSR2-3.1-132 K26 USB VPN.

 

I. Create VPN configuration files for Tomato OpenVPN setup

 

Before you start setting up Tomato VPN,  you need to create manual configuration files in your User Office. In this regard, please follow a few simple steps described in our tutorial.

When generating the VPN settings, choose the OpenVPN option in the Protocol field to get the required .ovpn file, as well as other info, including the chosen VPN server domain name. 

 

II. Configure Tomato OpenVPN client  

 

Once you generate the necessary settings for the selected VPN server, proceed with configuring Tomato firmware VPN client. For this, follow the steps below: 

1. Open the web interface of your Tomato router in a browser and enter the login and password.

2. In the side menu, select VPN and go to the OpenVPN Client tab.

3. Now, complete the fields of the Tomato VPN client as follows:

  • Set the checkbox for Start with WAN.
  • Interface Type: Choose TUN
  • Protocol: Choose UDP
  • Server Address/Port: Input a server name from the Domain name line in the generated configuration settings: de.vpnunlimitedapp.com / 1194. We have chosen the German server as an example.
  • Firewall: Automatic
  • Authorization Mode: Choose TLS
  • Username/Password Authentication: Leave it unchecked
  • Extra HMAC authorization (tls-auth): Disabled
  • Set the checkbox for Create NAT on tunnel.
OpenVPN client configuration for tomato router. KeepSolid VPN Unlimited. Settings 1

4. Go to the VPN Client #1 > Advanced tab to proceed the Tomato configuration and fill the lines with the following info:

  • Poll Interval: Enter 0
  • Redirect internet traffic: Enabled
  • Accept DNS configuration: Exclusive
  • Encryption cipher:  AES-256-CBC
  • Compression: No
  • TLS Renegotiation Time: Enter -1
  • Connection retry: Enter -1
  • Verify server certificate (tls-remote): Leave it unchecked
  • Custom Configuration: Input the data below
auth-nocache
nobind
persist-tun
persist-key
remote-random
remote-cert-tls server
route-metric 1
auth sha512
tun-mtu 1500
OpenVPN client configuration for Tomato router. Settings 2

5. Go to the VPN Client #1 > Keys tab of your Tomato router.

Now, you’ll need to use the .ovpn file previously generated in your User Office to complete the setup of the VPN client for Asus router. Copy the data between <tag> and </tag> in the configuration file, and paste it into the relevant fields:

Certificate Authority –<ca> text from the configuration file </ca>
Client Certificate - <cert> text from the configuration file </cert>
Client Key - <key> text from the configuration file </key>

Select data between <tag> and </tag> in the configuration file, and paste it to the relevant field

6. Click Save and then Start VPN Client 1.

Click Save and then Start VPN Client1 - OpenVPN Settings on Asus RT-N16 router with Tomato Firmware

Wait till the status changes to VPN Client #1(Running). That’s it! Now you have a running VPN connection on your Tomato router. 

To review the connection status go to the VPN Client #1 > Status tab.

To review the connection status go to the VPN Client #1>Status tab - OpenVPN for Asus RT-N16 router

We’ve covered all the steps required for Tomato VPN client setup via OpenVPN protocol. If you need to configure other devices, just check our Manuals page or contact our customer support for assistance.