Hi all. My users are connected to the internet via cisco asa 5510. When any of my user try to do a telnet to a public mail server on port 25, the response would be 220 ********. It shows asterix instead of proper wordings. However if we use a different firewall, we would not have such a problem. I have enabled inspection of esmtp but to no avail. Pls adivse. Thks in advance.
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...