The NAT ID is used to associate or bind hosts/subnet from higher security to lower security segment.
For example, to allow internal hosts/subnet to access internet, you need to define NAT and associate it with outside IP or range of Public IP via 'global' command. The NAT and Global ID must be identical, outherwise, no outbound access is allowed.
If no nat with ID of 10 or 30 is defined, then the "global (outside) 10" or 30 is not in used or relevant.
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...