Both Main Mode and Aggresive Mode are IKE Phase 1 exchange methods. Main mode is the default and recommended (more secure) exchange method because it consists of six exchange messages. Aggresive mode squeezes the IKE SA negotiation in three packets.
You can configure the device to use aggresive mode if needed or disable it. What device are we talking about?
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...