Thursday, July 16, 2009

IP Sec Fundamentals

Internet Protocol Security (IPsec), as defined in RFC 2401, provides a means by which to ensure the authenticity, integrity, and confidentiality of data at the network layer of the Open System Interconnection (OSI) stack. IPsec is a suite of protocols that define standards for four key elements needed in defining a comprehensively robust Virtual Private Network (VPN) enabler:

Security Protocols

Key Exchange Mechanisms

Algorithms Required for Encryption and Secure Key Exchange

SA Definitions and Maintenance

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