OpenVPN Installation
# Install openvpn on centos7
yum install net-tools
wget http://swupdate.openvpn.org/as/openvpn-as-2.0.10-CentOS7.x86_64.rpm
rpm -Uvh openvpn-as-2.0.10-CentOS7.x86_64.rpm
#passwd openvpn
echo "NewPass" |passwd openvpn --stdin
# Open the admin site and download the new client.