Virtual Private Networks

A virtual private network is a network that is built and contained within a public network infrastructure such as the global Internet. Using a VPN, a telecommuter can access the company headquarters' network and its servers by creating a secure tunnel through the Internet between the telecommuter's computer and a VPN router in the headquarters. A VPN offers a cost effective, reliable, secure point to point connection between remote users and your organization's network. It maintains the same management and security policies as the private network. Three main types of VPNs exist:

  • Access VPNs
    Provide a telecommuter remote access to the organization's network.

  • Intranet VPNs
    Link regional and remote offices to the headquarters internal network over a shared infrastructure using dedicated links.
  • Extranet VPNs
    Link business partners outside of the organization to the headquarters network.


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