I also have a static NAT mapping "public-Ipa" to a "internal-IPa" for some reason,
"Internal-IPa" <--> "Public-IPa"
they all set at the same firwall. everything looks fine, the only problem is i cannot ping from internal to internet, all other traffic can pass, www, telnet ,ssh ,.....
I trace the ICMP traffic and found the echo reply actually come back to my firewall but they forward to the "Internal-IPa" istead of the real internal host? I pretty sure it is the static NAT? But other traffic like http, when the packets come back to the firewall, the firewall can forward them to the right internal host rather than the static-nat host???
I am so confuse, is there any different between NATing ICMP traffic and other traffic ????
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...