Guys i m confused abt thi soncept....what th edifference between deffi-helmen an drest...i mean i know abt des, 3des etc....but what th edifference between these two groups an dwhat is deffi-helemen grouips?????? i cant get my head around it....thanks in advance
DES, 3DES and AES are called Symmetric Encryption Algorithms (uses the same secret key to encrypt and to decrypt data). Question is, how do they come up with the secret key? This is where the task of Diffie-Hellman comes in. Diffie-Hellman is a key exchange mechanism used by encrypting peers to exchange public keys and use them in combination with their private keys to generate a shared secret key which would then be used by DES,3DES and AES to encrypt and decrypt information.
Diffie-Hellman groups are used in IKE to establish session keys.Variations in configuration can be 768-bit, 1024-bit, and 1536-bit.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...