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IPSec Overview Part One: General IPSec Standards

Article is provided courtesy of Cisco Press.
Date: Feb 22, 2002.

Article Information

IP Security Protocol
DES Algorithm
Triple DES Algorithm (3DES)
Diffie-Hellman (D-H)
Message Digest 5 (MD5)
Secure Hash Algorithm 1 (SHA-1)
Rivest, Shamir, and Adelman Signatures (RSA)
Internet Key Exchange (IKE)
Certificate Authorities (CA)

Article Description

Virtual Private Networks (VPNs) are becoming required expertise for network and security engineers, and IPSec is the most commonly used protocol when implementing VPNs. In this first article of a five-part series on the Cisco implementation of IPSec, Andrew Mason delves into the components that make up the IPSec protocol suite.

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Rivest, Shamir, and Adelman Signatures (RSA)

RSA is a public-key cryptographic system used for authentication. IKE on the Cisco router or PIX Firewall uses a D-H exchange to determine secret keys on each IPSec peer used by encryption algorithms. The D-H exchange can be authenticated with RSA signatures or pre-shared keys.

8. Internet Key Exchange (IKE) | Next Section Previous Section

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