Our VPN 3030 Concentrator is sitting in the DMZ zone of our firewall. The ACS is sitting behind the firewall inside our LAN. Our mobile users are authenticated through the ACS server when they wants to establish a VPN connection to our network. Currently I allow all TCP/UDP ports from the Concentrator to the ACS. I am asked to change this to just open the necessary TCP/UDP ports, i.e, only the TCP/UDP ports needed by the ACS to work will be allowed to flow from the Concentrator to the ACS. What TCP/UDP ports must I open in order ACS to work? Thanks.
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...