Basically on the Catalyst switch you need to allocate the mentioned VLANS to a firewall group. You might also need to configure SVI on the core for routing VLANS that are not routed by the FWSM. Once the FWSM has VLANs allocated to it then you need to configure it like any other PIX. This link will give you the steps you need to follow. you might want to read on first so that you understand how traffic flows within the catalysts and its modules.
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...