actually i already have ACL apply on the outside interface, let set permit icmp any any. But problem still happen to be that way, always require inside host to initial traffic, then outside can access.
I understand this is not a big of issue, but for web server, it's kind of annoying. We always need to send out icmp to outside.
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...