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VPN security encompasses the collective measures that ensure data and transmission security within a VPN connection.
It includes security methodologies and tools that ensure communication confidentiality, user authentication and message integrity in a VPN.
VPN security is typically delivered through networking and/or tunneling protocols. Such protocols ensure data security and integrity by encrypting data when it is transmitted over the VPN tunnel or path. Once the packet successfully reaches the destination node, it is decrypted back to its original state. Similarly, at the user level, VPN security works by authenticating each user before they can access VPN services.
Some of the protocols that provide VPN security include:
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