First, see if you can ping this same host with a packet size of 1500, if not then we might be running into a packet size issue, also gather logs from the ASA and try to post the remote peer configuration as well. In this case I gather this ASA is where the client is located and we don't have the config from where the server is hosted.
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...