OpenVPN is a free and open-source software application that implements virtual private network (VPN) techniques to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It uses a custom security protocol that utilizes SSL/TLS for key exchange. It is capable of traversing network address translators (NATs) and firewalls. It was written by James Yonan and is published under the GNU General Public License (GPL).
OpenVPN allows a user to securely connect to a remote network over the internet. When a user connects to a remote network using OpenVPN, their internet traffic is routed through an encrypted tunnel to the remote network. This helps to protect the user's online privacy and can allow them to access resources on the remote network that might otherwise be blocked.
OpenVPN is available for a variety of platforms, including Windows, macOS, Linux, Android, and iOS. It can be used in a variety of configurations, including as a client-server VPN, a site-to-site VPN, or a remote access VPN. It is often used in conjunction with other security technologies, such as SSL or TLS, to provide an additional layer of security.
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