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Monday, March 05, 2018

Technology and Engineering What is Virtual Private Network (VPN)| Why VPN is used| VPN Protocols|

What is Virtual Private Network (VPN)| Why VPN is used| VPN Protocols|

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  • Actually what is VPN

VPN means Virtual Private Network. Far users and branch offices of same organization can securely access associated applications and other network resources through VPN. Because VPN creates a safe connection over respectively less safe network. VPN technology also creates encrypted connection. Single users can send and receive data through VPN secretly to connect proxy servers. They can hide their personal data and can write anonymously.

2 types of VPN:


VPN is a point-to-point connection between a VPN client and server or it is a site-to-site connection between two VPN servers. Site to site VPNs are created from firewall to routers. When VPN is connected on two branch offices it's should be site to site connection. Online security given by the VPN is accomplished by point to point tunnel.
When devices are connected with the internet using a VPN,  mobile users or home internet users can access other side of the VPN, with the help of IP Address (Internet Protocol). Because it creates a VPN tunnel from the client to the sever. 

VPN protocols:

  1. Open VPN
  2. Internet Protocol Security (IPSec)
  3. Secure Socket Tunneling Protocol (SSTL)
  4. Layer To Tunneling Protocol (L2TP)
  5. Point To Point Tunneling Protocol ( PPTP)


  • Unblocking VPNs:


Unblocking VPNs can provide authorization to access those blocked country servers.
Ex- From online shopping site xyz.com gives best offers in US. But you stay in India. By using VPN you can access this online store as a US user.

  • Blocking VPNs:


Some countries use blocking VPN. Because it's official or government internet. For no one from outside can access it.

Thanks For Reading.

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