First, I strongly recommend that you sit down and think about what you're trying to accomplish. As was mentioned, DNS will almost certainly be required for most web applications and services. You may want other services as well.
Second, unless I'm missing something, I believe that your access list is incorrect. Try something like:
access-list acl_in permit tcp x.x.x.x x.x.x.x any eq www
The destination port is 80. I believe that you have specified it as the source port.
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...