VPN with Windows XP ICS

From: Kemal Oral CANSIZLAR (ocansizlar_at_comcast.net)
Date: 12/24/04 

Date: Fri, 24 Dec 2004 02:29:19 -0800

Hi all,

I have the following topology - a simple 2-host home network;

Internet
   |
cable modem
   |
gateway notebook PC (Windows XP with ICS enabled for the outgoing link)
   |
(Bluetooth Personal Area Network)
   |
client tablet PC (Windows XP)

Both PC's have Cisco VPN Client v4.0.5 installed. The gateway is assigned
192.168.81.1 and client is assigned 192.168.81.106 on the LAN.

I am required to VPN to my school in order to access subscription services.
For that, I am able to browse through the pages on my gateway PC after the
VPN connection established. However I would also like to use VPN from my
client PC. There I have the problem... Without VPN enabled in either of the
PC's, the client can surf the Internet without a problem through the gateway
PC, but once the VPN is enabled in either of the machines, this is no longer
possible - I am losing the connection to the Internet from client PC.

I have googled through Internet, and encountered similar issues, but not
exactly defining my problem. At one resource it is said that the problem
could cease if installed a router, but I really would like to find a
solution without the need for a router, if possible. I am suspecting that I
have to tweak with IP addresses and/or configuration parameters, I already
tried a couple of things. I fear that there is an incompatibility issue that
renders such a scenario impossible, so I decided posting on the newsgroup
before attempting anything further.

I can provide further details,

Thank you very much,

-Kemal.

Relevant Pages

  • RE: ISA 2004 Firewall Client and ActiveSync 4.2
    ... at home in my WLAN all internet ... that killing my default gateway is not the way ... gateway and the appropriate DNS server entries. ... server internal IP then your client works as a secureNAT client and you're ...
    (microsoft.public.isa.clients)
  • Re: weird gateway to gateway vpn issue
    ... but then the vpn ... web sites from site B I have to disconnect the gateway to gateway ... has a domain controller that connects over the internet through ... to the internet through their local ISA server at any one time. ...
    (microsoft.public.isa.vpn)
  • Re: Coexistence and routing of two internet feeds
    ... this is a routing problem that RRAS should be able to ... will just use one gateway, and only switch if that goes down. ... for a VPN link because you know exactly what traffic needs to go over the ... > routing table point all internet traffic to the VSAT and VPN goes to DSL. ...
    (microsoft.public.win2000.ras_routing)
  • RE: Outbound VPN to remote Netscreen fails
    ... establish the VPN connection to a remote VPN router. ... client is installed on the workstation. ... IKE client protocol is blocked by the ISA Server. ... By default, this rule is applied to "SBS Internet Users", please change it ...
    (microsoft.public.windows.server.sbs)
  • Re: weird gateway to gateway vpn issue
    ... Could you give more infos about the ISA Nics config? ... works fine if the vpn link is broken. ... get to web sites from site B I have to disconnect the gateway ... Does both site got a DNS for internet name resolution? ...
    (microsoft.public.isa.vpn)