?
Solved

Is Double VPN connection with XP client, Win2003 VPN server possible?

Posted on 2006-07-10
8
Medium Priority
?
468 Views
Last Modified: 2012-06-21
We have a commercial program that downloads licenses from a license server.  We want to use this program from home by connecting to our company VPN server, but the ip addresses the company hands out don't work because the program only responds to license requests from ip addresses on the same subnet.  Unfortunately we aren't able to 'play' with the company VPN server.  
However, we have a second VPN server that we do control running on Windows2003.  We can't connect to our Win2003 VPN from home unless already connected to the company VPN (due to perimeter firewall).  Therefore, I think the remote user will need to make 2 VPN connections, 1 to the company VPN and then 1 more connection to our Win2003 VPN.  The second connection depends on the first connection.  Is this even possible?  Also, how to insure with a Windows XP laptop that it sends all packets out the interface of the second VPN connection?  Do you need to do route print on XP to view and modify the routing table?

We tried the double VPN connection but the XP laptop still couldn't get a license.  I think the problem is probably that it's sending the license request out the first VPN connection's interface.  It also may be that you can't have a double VPN connection when 1 connection depends on the other(not sure if Windows is smart enough to handle this, or if its even possible)

Let me know if you need more info.
Thanks for the help!
0
Comment
Question by:ShannonE
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
8 Comments
 
LVL 4

Author Comment

by:ShannonE
ID: 17073343
It seems like for a double VPN connection, XP would have to create a packet using the ip address of the second connection, and encapsulate that packet in another packet using the ip address of the first VPN connection.  That's why I said I don't know if Windows is smart enough to do this
0
 
LVL 51

Expert Comment

by:Netman66
ID: 17073418
The primary VPN server can be adjusted to hand out addresses from a "pool" which can be configured as local addresses rather than a different subnet.

You'll need to make this point to the people managing the VPN server so they can accommodate you otherwise you may find this next to impossible.

0
 
LVL 4

Author Comment

by:ShannonE
ID: 17073639
Due to company policies(politics) touching the primary VPN is not an option.  However, for the primary VPN connection, instead of getting it from a 'pool', can you right-click the VPN connection->Properties->Networking tab->Internet Protocol(TCP/IP)->Properties and change it from DHCP mode to a static ip address on the same subnet as the license server, thereby eliminating the need for the second VPN connection?
0
Get your Conversational Ransomware Defense e‑book

This e-book gives you an insight into the ransomware threat and reviews the fundamentals of top-notch ransomware preparedness and recovery. To help you protect yourself and your organization. The initial infection may be inevitable, so the best protection is to be fully prepared.

 
LVL 51

Expert Comment

by:Netman66
ID: 17073980
You can try, but you would need to make an exclusion for the IPs you will use so it doesn't conflict with addresses that may be given out.

You'll have to test this.

0
 
LVL 4

Author Comment

by:ShannonE
ID: 17086206
I've got someone working from home tomorrow so we're going to try a few things.  Just wondering though why you say the double VPN setup is 'next to impossible'.  Do you know anyone who has tried it?
0
 
LVL 51

Accepted Solution

by:
Netman66 earned 2000 total points
ID: 17086651
How do you intend to use VPN twice?  From the client to the first server then how would you VPN the second time?  This would very likely require split tunnelling even if you could manage it and that would be a routing nightmare.

0

Featured Post

Three Reasons Why Backup is Strategic

Backup is strategic to your business because your data is strategic to your business. Without backup, your business will fail. This white paper explains why it is vital for you to design and immediately execute a backup strategy to protect 100 percent of your data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The HP utility "HP Lights-Out Online Configuration Utility for Windows Server 2003/2008" could be of great use when it comes to remotely configure a HP servers ILO WITHOUT rebooting the server. We would only need to create and run scripts using thi…
A quick step-by-step overview of installing and configuring Carbonite Server Backup.
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…
Suggested Courses

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question