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openvpn setup.md

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OpenVPN Setup with NordVPN

The main references for this setup have been this & this, and NordVPN help docs.

Setup OpenVPN

Make sure you have a static IP and download OpenVPN:

$ sudo apt-get install openvpn 

Download the NordVPN config files from here, although I think it's better to download them directly to the openvpn folder with the following chain of commands:

$ cd /etc/openvpn/
$ sudo wget https://downloads.nordcdn.com/configs/archives/servers/ovpn.zip
$ sudo unzip ovpn.zip -d NordVPN-Servers
$ sudo rm ovpn.zip

The NordVPN-Servers folder is composed for two folders ovpn_tcp and ovpn_udp.

We need to create also de login file where we are going to store the login credentials for the VPN.

$ sudo nano /etc/openvpn/login
username@mail.com
password1234

Save the file ctrl-o and ctrl-x to leave.

Change the permissions of this file to be only accesible by root:

$ sudo chmod 600 /etc/openvpn/login

Now, setup one of the files we downloaded to configure OpenVPN.

Go to the NordVPN site in the recommended servers section and ask for a server for the best server related to our criteria and country. For example, if we want to connect to USA, it could yield the server name us2328.nordvpn.com.

Copy that file from the NordVPN-Servers files to /etc/openvpn/ and rename it as NordVPN.conf. Usually UDP connection is preferred, so you can copy with the following command.

$ sudo cp /etc/openvpn/NordVPN-Servers/ovpn_udp/$server_name.nordvpn.com.udp.ovpn /etc/openvpn/NordVPN.conf

Where $server_name is us2328 in this example.

Now, change in the file NordVPN.conf the line containing auth-user-pass for auth-user-pass /etc/openvpn/login.

Manually:

$ sudo nano /etc/openvpn/NordVPN.conf

or running the following command:

$ sudo sed -i 's_auth-user-pass_auth-user-pass /etc/openvpn/login_g' /etc/openvpn/NordVPN.conf 

Test the VPN and enable it on boot

Run:

$ sudo openvpn --config /etc/openvpn/NordVPN.conf

If everything looks fine, stop it with ctrl+c and enable it on boot with:

$ sudo systemctl enable openvpn@NordVPN