The IP security (IPSec) is an Internet Engineering Task Force (IETF) standard suite of protocols between 2 communication points across the IP network that provide data authentication, integrity, and confidentiality. It also defines the encrypted, decrypted, and authenticated packets. The protocols needed for secure key exchange and key management are defined in it.
Uses of IP Security – IPsec can be used to do the following things:
1) To encrypt application layer data. 2) To provide security for routers sending routing data across the public internet. 3) To provide authentication without encryption, like to authenticate that the data originates from a known sender. 4) To protect network data by setting up circuits using IPsec tunneling in which all data is being sent between the two endpoints is encrypted, as with a Virtual Private Network(VPN) connection.
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