I try to establish VPN connection to my corporate network. There is a problem with it. Our corporate policy demands use of static IP address. My ISP supplies static IP only through MS VPN connection.
This combitation of VPNs appears inoperative, at least with VPN Client 4.x.
Symptoms are: autentification completes successfully, then Client begins generating massive outgoing traffic (many megabytes per second) which is clearly visible in MS VPN connection status window, but none of this traffic reaches main ethernet connection (again, its status window shows it). After couple of minutes of such activity MS VPN connection disconnects/hangs/crushes.
Cisco Client log mostly consicts of hundreds of following error reports:
Function CniNewPacket() failed with an error code of 0xe4510002 (IPSecDrvCB:696)
It has nothing to do with firewall/proxy (checked twice).
Nor it is network in general: everything works perfectly with VPN Client 3.63. Yet, AFAIK it uses different principle of work.
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...