Raspberry Pi Open VPN Client Connection

In this tutorial, you will learn how to implement an OpenVPN client connection on a Raspberry pi. The OpenVPN service uses certificates to authenticate connections between the Server and the client. So before you begin, you must make sure that you have an OpenVPN Server running and have generated the required certificates.

OpenVPN is a virtual private network system that makes it possible to set up a secure point-to-point or site-to-site connections in routed or bridged configurations also sometimes known as tunnels

With your certificates ready, you must first install OpenVPN on your raspberry

sudo apt-get update
sudo apt-get install openvpn

After the installation copy your certificate files and store them in the created openvpn folder

sudo cp ca.crt mycrt.crt mykey.key openvpn.conf  /etc/openvpn

Replace the mycrt.crt and mykey.key with your certificate name and key name

Navigate into the openvpn folder

/etc/openvpn/

Open the OpenVPN config file. (I am using the geany editor)

geany openvpn.conf 

Uncomment or add the following three lines

persist-key
persist-tun
persist-remote-ip

Modify the paths for your client certificates

ca /etc/openvpn/ca.crt
cert /etc/openvpn/mycrt.crt
key /etc/openvpn/mykey.key

Save and close the config file

To start OpenVPN, run the following command

sudo openvpn openvpn.conf

You should now be ready, up and running . Good luck!