Re: the different between cisco vpn client 4.6 and cisco vpn cli
VPN Client 5.0 should use the same ports and protocols as the earlier version except the IKE Packets. The source packets of IKE, which used to be Static UDP Port 500 has been changed to dynamic, meaning any UDP Port higher than 1024.
If you'd like to use the VPN client with the old behavior, please open the corresponding
VPN profile with a text editor (*.pcf at Program Files/Cisco Systems/VPN client/profiles),
and enter the following line:
This will force the Client to use UDP500 as source port.
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...