OpenVPN is an open-source software application that implements virtual private network (VPN) techniques for creating secure point-to-point or site-to-site connections in routed or bridged configurations. It uses a custom security protocol that utilizes SSL/TLS for key exchange and is known for its flexibility and cross-platform support. OpenVPN allows users to securely connect to a private network from remote locations, encrypting all data sent between the client and server. It is widely used for creating secure tunnels over public networks like the internet, ensuring privacy and confidentiality for transmitted data. OpenVPN supports various authentication methods, including pre-shared keys, certificates, and username/password combinations, making it suitable for both personal and enterprise VPN solutions. It...