======OpenVPN on Ubuntu 18.04======
This guide is for setting up an OpenVPN server on Ubuntu 18.04, there are some similarities between the 16.04 and 18.04 guides, mostly in the parts dealing with EasyRSA.


=====Creating a New Certificate=====

Start by logging into the OpenVPN machine and creating the certificate request for which the Certificate Authority will sign.\\
\\
With a passcode:
<code>
$ cd ~/EasyRSA-3.0.x
$ ./easyrsa gen-req <cert_name>
</code>
Without a passcode:
<code>
$ cd ~/EasyRSA-3.0.x
$ ./easyrsa gen-req <cert_name> nopass
</code>

Copy the resulting file <cert_name>.key to the ''~/client-configs/keys/'' directory.
<code>
cp pki/private/<cert_name>.key ~/client-configs/keys/
</code>

Transfer the ''<cert_name>.req'' to the CA machine using whatever method you wish. I use SFTP from the CA machine to connect to the OpenVPN server and pull down the file.

On the **CA machine**, import the certificate request and generate the certificate.
<code>
cd EasyRSA-3.0.x/
./easyrsa import-req <cert_name>.req <cert_name>
./easyrsa sign-req client <cert_name>
</code>

Once completed, again using SFTP, copy the resulting ''<cert_name>.key'' to the ''~/client-configs/files/'' directory on the OpenVPN server. Now you can create the ovpn config file.

On the **OpenVPN machine**:
<code>
cd ~/client-configs
sudo ./make_config.sh <cert_name>
</code>

This will create the ''<cert_name>.ovpn'' file in ''~/client-configs/files''