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Note: The term tunnel does not denote either Transport or Tunnel mode (see Understanding IPsec Operational Modes). It refers to the IPsec connection. |
A virtual private network (VPN) provides a means for securely communicating among remote computers across a public wide area network (WAN), such as the Internet.
A VPN connection can link two local area networks (LANs) or a remote dial-up user and a LAN. The traffic that flows between these two points passes through shared resources such as routers, switches, and other network equipment that make up the public WAN. To secure VPN communication while passing through the WAN, the two participants create an IP Security (IPsec) tunnel.
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Note: The term tunnel does not denote either Transport or Tunnel mode (see Understanding IPsec Operational Modes). It refers to the IPsec connection. |
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