Working Setup Script for OPENVPN, Squid, SSH and Dropbear with anti DDOS and Fail2ban.
Upload to your server and do this command:
chmod +x Centos_7.sh && bash Centos_7.sh
This command assumes that you are on the directory where you uploaded the script, otherwise it will not work.
Note: If prompted if you want to auto install dependencies just write y and click enter. The script will then install all the needed dependencies for it to work as intended.