Install OpenVPN on debian 9

apt-get update

sudo apt-get upgrade

sudo apt-get install ufw

sudo ufw allow 22

sudo ufw allow 80

sudo ufw allow 443

sudo ufw enable

wget https://git.io/vpn -O openvpn-install.sh

sudo bash openvpn-install.sh

source: https://www.cyberciti.biz/faq/install-configure-openvpn-server-on-debian-9-linux/

lowendbox style:

wget https://git.io/vpn -O openvpn-install.sh && bash openvpn-install.sh