Subscribe RSS FeedThe Internet Engineering Task Force (IETF) in a series of request authoritatively specifies Ipsec (Internet Protocol Security) for Comments addressing to various components and extensions. Ipsec is a protocol suite for securing IP communications by authenticating and encrypting each IP packet of a data stream. IPsec also include protocols for set up the mutual authentication between agents during the beginning of the session and conciliation of cryptographic keys to be used during the session. IPsec is generally being used to protect data flows between hosts such as a computer users or servers, between a pair of security gateway and a host or between the security gateways like routers or firewalls.
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IPsec follows two-encryption method which is called- “Transport and Tunnel”, the Transport mode encrypts only the data portion or payload of each packet and leaves the header unscathed while the Tunnel mode encrypts both the header and the payload, as resultant on the receiving area, an IPSec-compliant device decrypts each packet.
IPsec is generally used in “tunnel mode” with a VPN (Virtual Private Network) nonetheless; IPsec also supports a “transport mode” for direct connection between two computers.
