OpenVPN

wikipedia:OpenVPN (2001) is a virtual private network (VPN) system to create secure point-to-point or site-to-site connections in and remote access.

OpenVPN uses a custom security protocol that utilizes SSL/TLS for key exchange.

Port 1194 is the official IANA assigned port number for OpenVPN

• Configuration: /etc/openvpn/server.conf
• Logs: /var/log/openvpn.log
• Package: openvpn package contains openvpn binary

.ovpn file

Basic Commands

Ubuntu Linux 16.04/18.04 LTS

• Stop the OpenVPN service:

$ sudo systemctl stop openvpn@server

(No output)

• Start the OpenVPN service:

$ sudo systemctl start openvpn@server

• Restart the OpenVPN service:

$ sudo systemctl restart openvpn@server

$ sudo systemctl status openvpn@server

Ubuntu Linux 14.04 LTS

• Stop the OpenVPN service:

$ sudo /etc/init.d/openvpn stop

• Start the OpenVPN service:

$ sudo /etc/init.d/openvpn start

• Restart the OpenVPN service:

$ sudo /etc/init.d/openvpn restart

Activities

• Follow https://www.cyberciti.biz/faq/howto-setup-openvpn-server-on-ubuntu-linux-14-04-or-16-04-lts/ installation guide
• Verify status of your OpenVPN server: systemctl status openvpn-server@server
• killall -USR2 openvpn
• Read https://wiki.archlinux.org/title/OpenVPN
• Read StackOverflow: https://serverfault.com/questions/tagged/openvpn?tab=Votes

Related

• OpenVPN Connect
• Mbed TLS
• AWS VPN Client

See also

• OpenVPN, Tunnelblick, OpenVPN Connect, .ovpn, CRL, systemctl status openvpn, /var/log/openvpn.log, /lib/systemd/system/openvpn.service, systemctl status openvpn-server@server, /etc/openvpn/, /etc/openvpn/server.conf, /etc/pam.d/openvpn, /etc/openvpn/users, openvpn --help, OpenVPN changelog, Pritunl, tunl0
• VPN: IPsec (Openswan), OpenVPN, Forticlient, GlobalProtect (PAN-OS), WireGuard (Linux Kernel), Tailscale, PulseSecure, WebVPN, SoftEther, ESP, IKE, AWS VPN, Zerotier, VPN client, Pritunl, GCP Cloud VPN, Mesh virtual private network, Mullvad