Unfortunately not on port 443. You would need to use TCP port higher than 1024 for the ipsec-over-tcp port#.
TCP/443 is application specific (well known port) for https, therefore you can't use it and most firewall/application inspection device would inspect it as a normal HTTPS traffic and ipsec-over-tcp does not resemble the HTTPS.
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...