I have a bit of a strange one. I have 2 RSV4000 used as gateway VPNs. On one of them I enabled single port forwarding 3500-->3389 on an internal ip. On the external I have a FQDN updated by dyndns. I allow remote firewall administration port 8080. Here is the issue, I dont need to append the port number to the FQDN to get RDP access. As far as I understood it should be entered on the client software as such <FQDN>:3500. The router in turn would forward to 3389 on the terminal server with the internal ip. As it sits all I have to do is enter the the FQDN in the RDP client software and the password prompt pops up. The NMAP scan from and external address shows port 8080 open as well as 3389. I will disable the port fwd, but it seems like a bug to me.
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...