OpenVPN configuration

 1. Update information about packages:

sudo apt-get update

 2. Install OpenVPN client and reboot:

sudo apt-get install openvpn
sudo reboot

 3. Download configuration files from here, save it to /etc/openvpn/configs.zip and unpack 

sudo unzip  /etc/openvpn/configs.zip -d  /etc/openvpn                                                                                                                                          
sudo rm -rf  /etc/openvpn/configs.zip                                                                                                                                                                    
sudo rename "s/.ovpn/.conf/" /etc/openvpn/*.ovpn  

 4. Show all available locations:

ls /etc/openvpn/*.conf

 5. Set up connection:

sudo openvpn --config /etc/openvpn/Milan.conf

Optionally: autostart connection at boot time

1. Create file with your credentials:  

echo 'username' | sudo tee /etc/openvpn/creds.txt
echo 'password' | sudo tee --append /etc/openvpn/creds.txt

 2. Change configuration files:

sudo sed -i 's/auth-user-pass/auth-user-pass \/etc\/openvpn\/creds.txt/g' /etc/openvpn/*.conf

 3. Edit /etc/default/openvpn. Replace "Milan" With location that you need.

echo "AUTOSTART=\"Milan\"" | sudo tee --append /etc/default/openvpn