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
Solved

Windows XP VPN client to Windows 2003 SBS VPN Server. Disconnects after a few minutes.

Posted on 2004-08-29
11
406 Views
Last Modified: 2012-06-27
Hi All,

I have a Windows 2003 SBS with ISA 2000 set up as a VPN Server. I have a Windows XP Pro client that is connecting through to it. It seems that after only a few minutes, the VPN connection is ended without any error messages. I am using PPTP and certificates for authentication.

I have checked Remote Access Policy settings regarding limits/idle times etc. and they all seem ok. I have tried connecting the vpn and then running a constant ping to the VPN server, but it still disconnects. I have tried two different client pc's, both running Windows XP Pro. The Windows 2003 server sits behind a Netgear DG834 DSL Modem/Firewall that has the latest firmware. It is passing all traffic for PPTP onto the external IP of my SBS. I found a solution on this site that suggested reducing the MTU in the DG834 from 1500 to 1460. I also tried doing this on my XP computer with the help of TCPOptimiser. None of what I have done above has made any difference whatsoever.

I have spent quite a few hours researching this problem but have been unable to fix it so far. I would appretiate any help that can be offered.

Cheers!

Peter    
0
Comment
Question by:PeteJH
  • 5
  • 2
  • 2
  • +1
11 Comments
 

Author Comment

by:PeteJH
ID: 11928232
I have also just installed Windows XP Service Pack 2 on one of the clients and the disconnections still occur.
0
 
LVL 33

Expert Comment

by:humeniuk
ID: 11928363
This probably isn't the answer you're looking for, but when I had the same problem, I messed around with it for a while, pulled out some hair, and then bought a couple of VPN routers.  Life is good.
0
 

Author Comment

by:PeteJH
ID: 11928452
I have thought about it, but I don't see any reason why this shouldn't work and refuse to let it beat me.

btw, I have also tried putting my DSL Modem/Firewall into DMZ, forwarding all traffic through to the VPN server, but that hasn't helped.

Cheers,

Peter
0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 
LVL 15

Expert Comment

by:adamdrayer
ID: 11928493
are you using ICS on either side?
0
 

Author Comment

by:PeteJH
ID: 11928514
Thanks for your response,

The VPN server is a Win 2003 SBS. It has two networks cards installed for LAN and WAN and has the Routing and Remote Access service running as well as ISA 2000. So it is sharing the internet connection, but is not using ICS as such. I have made sure that the client pc's are not running ICS either.

If you are leaning towards the MS KB article that has a title like "VPN disconnects after 55 seconds" I have already checked it out and this is why I installed XP Service Pack 2 on one of the clients to see if it made a difference.

Cheers,

Peter
0
 
LVL 15

Expert Comment

by:adamdrayer
ID: 11928524
thanks.  that's what i was look at.
0
 

Author Comment

by:PeteJH
ID: 12139783
Turns out the ADSL Router/Firewall at the clients end was causing the problem. I upgraded the firmware on it and all is well.
0
 

Author Comment

by:PeteJH
ID: 12417023
How do I refund the points for this question?
0
 
LVL 33

Expert Comment

by:humeniuk
ID: 12417095
Glad to hear you're up and running.

Your options for closing the question are here: www.experts-exchange.com/help.jsp#hs5.  Essentially, you want to post a question in Community Support (www.experts-exchange.com/Community_Support) asking a moderator to close the question because you resolved it yourself.
0
 

Accepted Solution

by:
ee_ai_construct earned 0 total points
ID: 12463174
Question answered by asker or dialog valuable.
Closed, 500 points refunded.
ee_ai_construct (replacement part #xm34)
Community Support Admin
0

Featured Post

Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

Question has a verified solution.

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

This article is in response to a question (http://www.experts-exchange.com/Networking/Network_Management/Network_Analysis/Q_28230497.html) here at Experts Exchange. The Original Poster (OP) requires a utility that will accept a list of IP addresses …
Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

839 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