would setup NAT only for port 80. Bear in mind though that you still need the acl allowing the access so if there are a lot of ports then the first static would make more sense. Also note these are pre 8.2 NAT commands so you may need to adjust if the OS version is more recent.
If the first 2 conditions are not in place you can still do it but you may need to do more things with NAT.
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...