Greetings to All. I am studying for CCNP exams in R&S. I have just managed to get a VPN connection working after struggling with it for several days. Even so, the entire aspect of IPSec seem very mysterious. I am seeing terms liek IKE, IPSec SA, ISAKMP SA, phase 1 and phase 2, negotiations, shared keys, digital certificate, nonces and all that. I just cannot put these terms together and form a complete picture. I reckon that I may have to veer into security. Here is where you can help me. Please, recommend good materials that I can use in order to gain a firm understanding of how the topics tie together.
When I say I got a VPN connection working, I mean I simulated it, not a production VPN connection. Not sure I can repeat the process without going through the configurations all over again. I wish to understand the relationships so that I would not need to memorize my configuration file.
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...