So if you enabled the routing updates from DC to 223 and 223 to DC, which will go via the tunnel and hence it will be encrypted only.... in your case if you have 222 as hub and other 2 sites as spoke and if you enabled spoke to spoke communication, your requirement will go as encrypted.
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...
[toc:faq]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 and UDP are I...