i'm trying to configure portforwarding on our ASA5510 with ASA Software 8.0(4) and ASDM Version 6.1(5)51
I've configured a portforwarding list with "local tcp port" 3044 Remote-Server is the ip of the server, where the user should be able to connect to and "remote port" 25.
If i connect from the client with a browser to the asa and log in, i can start the application access.
But with telnet, i cannot reach the the server, if i connect to localhost port 3044, i get an connection refused. On the remote-Server doesn't arrive an packet on port 25. I've also tried this with rdp and ssh. Nothing works.
On the client side, i've tried this with Windows, Linux and Mac OS. Browsers were Firefox, Internet Explorer and Safari.
The logs of the ASA don't show anything unusual.
Are there any additional configuration steps to get this work?
I would be very appreciated, if anyone can give me a hint....
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...