Here is a tutorial on how to connect a DD-WRT router to LimeVPN servers via the OpenVPN GUI client:

Step 1: In the DD-WRT Administrative Interface, navigate to Setup > Basic Setup. Under Network Address Server Settings (DHCP), set these DNS addresses:

Then, Save and Apply settings.

If you’re setting up two routers, you should change the second router's Local IP address to be different than the main router’s. (In this case, the main router’s IP is 192.168.1.1, while the one we’re connecting to LimeVPN server is accessible via 192.168.2.1)

Step 2: Navigate to Setup > IPv6. Set IPv6 to Disable, then Save & Apply Settings.

(this is a recommended step to make sure you get no IP leaks)

Step 3: Navigate to Service > VPN. Under OpenVPN Client, set Start OpenVPN Client = Enable, to see the options necessary for this configuration. Then set the following:

Note: If the Username and Password fields are missing, fill in the remaining fields and proceed to step 3.

The options not mentioned in this guide should be kept with default values.

Step 3.1: (Optional, depending on step 3.) If the Username and Password fields are missing, go to Administration > Commands, and enter this code:

echo "YOURUSERNAME
YOURPASSWORD" > /tmp/openvpncl/user.conf
/usr/bin/killall openvpn
/usr/sbin/openvpn --config /tmp/openvpncl/openvpn.conf --route-up /tmp/openvpncl/route-up.sh --down-pre /tmp/openvpncl/route-down.sh --daemon

Replace YOURUSERNAME and YOURPASSWORD with your respective LimeVPN account credentials. Click Save Startup, and return to the previous VPN tab.

Step 4: In the Additional Config box either enter or copy/paste these commands:

#Delete # in the line below if your router does not have credentials fields and you followed the 3.1 steps:
​#auth-user-pass /tmp/openvpncl/user.conf

Step 5: Download the CA and TLS certificates here.

Double click on the downloaded file and open any server file you wish to connect to in a notepad, The notepad file consists of both the CA Certificate as well as the TLS key.

Note: Please choose the certificate mentioned as “ Destination server “ 

Step 6: In the folder, open the .ovpn file of the server you chose to use with a text editor, such as Notepad.

Step 7: Copy its contents into the CA Cert field. Be sure the entire text gets pasted in, including

Step 8: You can keep the TLS Auth key empty.

Step 9: After entering all this data, Save and Apply Settings.

Step 10: To verify the VPN is working, Navigate to Status > OpenVPN

Under State, you should see the message: Client: CONNECTED SUCCESS.

Step 11: To create a kill-switch, you can go into Administration > Commands, and enter this script:

Then select Save Firewall, Go into Administration > Management > Reboot router.