In that case, have you tried resetting the blade with the 'hw-module module reset' command?
If the blade comes backs up and you still cannot session to it, I would suggest connecting a laptop to the FWSM via a flat console cable (the console port is on the main board of the blade). This way you can see any error messages that might be generated while the FWSM is loading.
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...
[toc:faq]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 and UDP are I...