VPN

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VPN: encapsulating the communication between the two PC’s in an encrypted tunnel that uses strong encryption methods.

IPsec (Internet Protocol Security), is a set of protocols define by the Internet Enginering Task Force (IETF) to provide IP security at the network layer.

IPSec based VPN made up of two parts:

  • 1. IKE Internet Key Exchange protocol
  • 2. ESP IPsec protocols
PPTP
L2TP
SSL-VPN