I have a strange PAT issue. I have a 5510 firewall with some webservers, a switch and an internet router attached to the outside interface. If I use an internal machine with a static NAT I can ping and telnet to the router and switch and browse a webmail account on a webserver. Although, if I try to do that same thing from an internal machine using PAT (overload on the outside interface) it fails. Ping will reply one time and then time out the remaining three. Telnet and browsing to the webmail account both fail. Any suggestions would be appreciated.
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...