The virtual private network (VPN) was an exciting remote networking innovation; it allows remote users to connect to a private local area network (LAN) across the Internet, instead of having to dial directly in to a remote access server. By creating an encrypted tunnel, the VPN provides a way to communicate securely through the public network. However, the traditional VPN has a few drawbacks: it can be slow and is not seamless for users, and some networks, such as those provided by hotels, block VPN traffic.
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