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Remote VPN on my subnet

Posted on 2006-11-30
Medium Priority
Last Modified: 2010-04-18

I have to PPTP/1723 on a 2003 Server to a remote site from my XP machine.  The trouble is the remote site is on the same subnet as my local office.  Consequently all packets stay in my LAN and I can't connect to their server.  This I put down to my machine thinking the is local and it just times out.  I can't change either network Id's.  What is the solution for this?

Cheers Experts :)
Question by:robjeeves
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LVL 77

Expert Comment

by:Rob Williams
ID: 18051068
Basic rule, as you are aware, is different subnets. Having said that with the Windows VPN client, if the "use default gateway on remote network" is enabled (it is by default) it 'should' force all traffic through the VPN/virtual adapter, and allow you to connect. This of course disables local access to resources and local access to the Internet. If not familiar with it, the option is located control panel | network connections | properties of VPN/Virtual adapter | networking | TCP/IP properties | Advanced | General | "use default gateway..."
This usually works, but not always. I am not sure why.

Author Comment

ID: 18051253
G'day Rob.  I saw that option and it it already ticked :-(  Anything else I can do? other than pray to the almighty or change one of the networks subnet?

LVL 77

Accepted Solution

Rob Williams earned 2000 total points
ID: 18053281
Sorry Rob, I have never heard of a work around. Wish I had, as it is common.
One option would be to use Hamachi's free VPN software, rather than the Windows. It works differently, and doesn't care about the subnets:

Hamachi is a 3rd part application that allows you to configure a VPN between 2 systems or sites, with no additional hardware or opening/forwarding of ports. To do so the application needs to be installed on on both machines. Then both machines make an outgoing connection to a 3rd party server. Outgoing connections are not blocked by most firewalls. The 3rd party server orchestrates the handshaking and configuration of the tunnel and then drops the tunnel and allows them to continue to communicate. Once connected, like any VPN the tunnel allows the two systems to use services such as file sharing, remote desktop and such. Hamachi is most useful if at least on the "server" machine it is installed as a service, making it available when you wish to connect.
to run it as a service:
batch file to set up service more easily, see near end of thread.   

Author Comment

ID: 18062202
Thanks for additional response Rob.  I'll take a look.

LVL 77

Expert Comment

by:Rob Williams
ID: 18062255
Thanks Rob. Good luck with it.

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