Hi .. yes that is correct .. from the below link perform steps 4, 6 (select no),7 and 8. Once the PIX reboots with the new activation key you can install the VAC+ or you could install the modules before renewing the license if you like too. If your current license already has at least DES enabled then the module should be recognised otherwise it will once the new license is upgraded.
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...