Setting up OpenVPN Server on CentOS 7 using EasyRSA 3

Basic CentOS Setup

First, you'll need a CentOS 7 server. You can use one from almost anywhere – a machine with Digital Ocean, AWS or Azure, or one in your friend's apartment. Assuming you're starting from scratch, you'll need to get the software updated and the EPEL repo installed.

# sudo yum update -y
# sudo yum install epel-release -y
# sudo yum update -y

Then you'll want to install openvpn, easyrsa, iptables and (recommended) a few network troubleshooting tools.

# sudo yum install -y openvpn easy-rsa iptables iptables-services wget yum-cron net-tools bind-utils nc mtr

Setting up OpenVPN

Now, you'll want to configure the OpenVPN server. To do this, copy the following file to /etc/openvpn/server.conf.

# Secure OpenVPN Server Config