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2. Virtual private network - Wikipedia

   en.wikipedia.org/wiki/Virtual_private_network

   Virtual private network (VPN) is a network architecture for virtually extending a private network (i.e. any computer network which is not the public Internet) across one or multiple other networks which are either untrusted (as they are not controlled by the entity aiming to implement the VPN) or need to be isolated (thus making the lower network invisible or not directly usable).

3. IPsec - Wikipedia

   en.wikipedia.org/wiki/IPsec

   t. e. In computing, Internet Protocol Security (IPsec) is a secure network protocol suite that authenticates and encrypts packets of data to provide secure encrypted communication between two computers over an Internet Protocol network. It is used in virtual private networks (VPNs).

4. 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 geo-blocking and users who want to protect their communications against data profiling or MitM attacks on hostile networks. A wide variety of entities provide VPN services for several purposes. But depending on the provider and the ...

5. Overview of NordVPN - AOL Help

   help.aol.com/articles/overview-of-nordvpn

   A VPN, or virtual private network, is a service that protects your internet connection and privacy online. By creating an encrypted tunnel for your data, a VPN protects your online identity by hiding your system’s IP address. Work, shop, browse or use social media platforms safely knowing NordVPN is helping keep your data protected.

6. Secure Socket Tunneling Protocol - Wikipedia

   en.wikipedia.org/wiki/Secure_Socket_Tunneling...

   Secure Socket Tunneling Protocol. In computer networking, Secure Socket Tunneling Protocol (SSTP) is a form of virtual private network (VPN) tunnel that provides a mechanism to transport Point-to-Point Protocol (PPP) traffic through an SSL/TLS channel.

7. Layer 2 Tunneling Protocol - Wikipedia

   en.wikipedia.org/wiki/Layer_2_Tunneling_Protocol

   Layer 2 Tunneling Protocol. In computer networking, Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs) or as part of the delivery of services by ISPs. It uses encryption ('hiding') only for its own control messages (using an optional pre-shared secret), and does not provide any encryption ...