If there is no Static Mapping from internal IP to external IP, then the access-lists would not be applicable. A best way to see if the access-lists are used or not is to issue "show access-list " and see if there are any hit counts. If there are not, then most likely it is not used and it is safe to remove them. If you are certain that there are no hosted services in that site, then there is not reason for those access-lists to be in there. You can remove them as keeping them there could potentially open up some security risks.
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...