1. Install Openvpn
# sudo apt-get install openvpn
2. Copy your "xxx.ovpn" file and ".crt" file with key file in this parth
#cd /etc/openvpn
3. Crate new file with your vpn username and password in /etc/openvpn Dir
#nano /etc/login.conf
user_name
password
After save it ".conf" file extraction.
4. Then edit #nano /etc/xxx-your-openvpn-file.ovpn and change this line
Change:
auth-user-passTo:
5. Then you can config boot-up auto startup vpn