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  2. Point-to-Point Tunneling Protocol - Wikipedia

    en.wikipedia.org/wiki/Point-to-Point_Tunneling...

    The Point-to-Point Tunneling Protocol ( PPTP) is an obsolete method for implementing virtual private networks. PPTP has many well known security issues. PPTP uses a TCP control channel and a Generic Routing Encapsulation tunnel to encapsulate PPP packets. Many modern VPNs use various forms of UDP for this same functionality.

  3. OpenVPN - Wikipedia

    en.wikipedia.org/wiki/OpenVPN

    VPN. License. GNU GPLv2 [10] Website. openvpn .net. OpenVPN is a virtual private network (VPN) system that implements techniques to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It implements both client and server applications.

  4. Virtual private network - Wikipedia

    en.wikipedia.org/wiki/Virtual_private_network

    Virtual private network. A virtual private network ( VPN) is a mechanism for creating a secure connection between a computing device and a computer network, or between two networks, using an insecure communication medium such as the public Internet.

  5. VPN blocking - Wikipedia

    en.wikipedia.org/wiki/VPN_blocking

    VPN blocking. VPN blocking is a technique used to block the encrypted protocol tunneling communications methods used by virtual private network (VPN) systems. Often used by large organizations such as national governments or corporations, it can act as a tool for computer security or Internet censorship by preventing the use of VPNs to bypass ...

  6. VPN service - Wikipedia

    en.wikipedia.org/wiki/VPN_service

    A virtual private network ( VPN) service provides a proxy server to help users bypass Internet censorship such as geoblocking and users who want to protect their communications against data profiling or MitM attacks on hostile networks. A wide variety of entities provide "VPNs" for several purposes. But depending on the provider and the ...

  7. Microsoft Point-to-Point Encryption - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Point-to-Point...

    Microsoft Point-to-Point Encryption (MPPE) encrypts data in Point-to-Point Protocol (PPP) -based dial-up connections or Point-to-Point Tunneling Protocol (PPTP) virtual private network (VPN) connections. 128-bit key (strong), 56-bit key, and 40-bit key (standard) MPPE encryption schemes are supported. MPPE provides data security for the PPTP ...

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