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VPN through Win XP

Posted on 2004-10-27
Medium Priority
Last Modified: 2013-11-16
I am trying to connect 2 computers that are running Win XP using VPN.  I have set one as a server and the other as client.  But when i connect to the server, I can not browse the internet.  The computers connect just fine, but the client can not browse the internet.

what is wrong?
Question by:sschange
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Expert Comment

ID: 12425013
Do you have Internet Connection Sharing turned on for the machine wired to the web?
LVL 25

Expert Comment

ID: 12425351
this is a VERY common problem and the solution is pretty simple... the problem is that by default the MS VPN client (assuming you are using a MS VPN) has "use default gateway on remote network" checked. What this means is that your VPN client is trying to get out to the internet on the remote network's gateway, not the gateway of the client.  To correct this do the following:

go to the properties of the VPN connection (in network connections)
go to the networking tab
hightlight tcp/ip
select properties
press advanced
uncheck "use default gateway on remote network"

now the client will continue to use its own gateway (rather than the remote's) even when the VPN connection is active.

Author Comment

ID: 12426377
i have done what you have suggested but it still does not let me browse the net.

How do you turn on the Internet Connection Sharing?
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Accepted Solution

TannerMan earned 750 total points
ID: 12426562
Well, I sort of misunderstood your question. I thouht your actual desire was to surf via the machine your VPN'ing INTO.
After reading mikeleebrla's response I re-read your question and now am on board.

First off, turn that default gateway option back on. It should NOT be off.
The main reason I say this is..........

machine A is on a private network and he creates a vpn connection to his buddy's pc at home using good ole pptp which is NOT secure. If that box is not checked, AND a hacker hijacks your vpn tunnel.......he comes into machine A and goes right to the private network. NOT GOOD.


Since your actually wanting to surf out of the machine itself, try this for me. I don't THINK it will work, but it just might
On the remote machine open up IE got to tools>internet options and click on the Connections tab.
In the first field you'll see your VPN dial up connection. Highlight it and click the SETTINGS button just to the right.
Click the check box for use a Proxy.
In first field put the IP address of your machine's network card. Not the vpn IP, but the one connecting to your internet source.
If your on a corporate network with a proxy server then put that proxy server's IP in the field.
Put port 80 if this is your home internet connection in the next field.
If on corporate network, use port for your proxy (usually 8080).
Place a check in the box for bypass proxy for local addresses.
close IE and connect to your vpn session and try the web.

IF, you still want to turn on ICS on the host VPN, you can do so under the network interface card's settings.
LVL 25

Expert Comment

ID: 12426683
all that box does is select which default gateway to use,, either the local machine's or the remote machine's,,, if a hacker is smart enough to hack in he/she will surely be smart enough to look at the ip config of the box and figure out what the remote computer's ip scheme is so no security is gained or lost here.

Expert Comment

ID: 12426762
Sorry mikeleebrla, but you need to read the article that this snipet came from.....

"This is a very significant setting, because it can make the difference between having a secure VPN client connection or allowing your VPN clients to become hacker gateways."

Here you go

This is not a question of being smart enough....why allow them in to begin with? There is a very dangerous difference in the two.

Author Comment

ID: 12454739
sorry about the delay,  i was busy doing other things.  Just to make things more clear, I am not realy worried about the security at all.  All i want is to be able to browse the internet throgh the server using The VPN connection.  The onlt thing that the server is connected to is the internet, and there are not LAN connected to it.  For example : i want my friend (Client computer) to connect to my computer (VPN server) and then brose the internet throgh me (my internet connection and the new ip i assign to it if needed).

I have not had a chnage to try what you guys have suggested yet, but i will and let you know the result.  In case some thing else comes to your mind please let me know.


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