Cannot maintain a Remote Desktop Connection over VPN using..

it · External Since: Aug 06, 2007 Posts: 2

Just looking for some pointers to see if I can resolve a small problem
we are having...

We have recently upgraded our out-of-date BT ADSL router to a Netgear
DG834 wireless ADSL router and are now having some interesting issues
with VPN connectivity to Windows servers.

If I have a VPN active, and then make a connection over that VPN using
Windows Terminal Server Client v5.0, VNC Viewer or XP's in-built
Remote Desktop Connection, everything works fine but after just two or
three minutes the session either disconnects (in the case of Windows
2000 servers) or simply hangs for several minutes (when connected to
Windows Server 2003 servers). In both cases this characteristic is
frustrating to say the least!

There are no errors it simply kicks me off and then leaves me to
either reconnect to the now disconnected session, or just wait for the
server to respond after it idles for several minutes.

Is this likely to be a configuration issue on the Netgear router?

This issue is affecting both XP Professional SP2 users, and Vista
Business users.

Thanks in advance for your help!

it · External Since: Aug 06, 2007 Posts: 2

On 6 Aug, 16:09, "Robert L [MVP - Networking]" <nore... RemoveThis @hotmail.com>
wrote:
> It could be the MUT issue. this link may help,
>
> VPN connection is disconnected after several minutesVPN connection is disconnected after several minutes. We have been seeing more and more cases like this one. We don't really know the causes, ...
> http://www.chicagotech.net/VPN/vpn3minutes.htm
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting onhttp://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access onhttp://www.HowToNetworking.com <i... RemoveThis @dykeyaxley.co.uk> wrote in messagenews:1186400145.402301.72970@o61g2000hsh.googlegroups.com...
>
> Just looking for some pointers to see if I can resolve a small problem
> we are having...
>
> We have recently upgraded our out-of-date BT ADSL router to a Netgear
> DG834 wireless ADSL router and are now having some interesting issues
> with VPN connectivity to Windows servers.
>
> If I have a VPN active, and then make a connection over that VPN using
> Windows Terminal Server Client v5.0, VNC Viewer or XP's in-built
> Remote Desktop Connection, everything works fine but after just two or
> three minutes the session either disconnects (in the case of Windows
> 2000 servers) or simply hangs for several minutes (when connected to
> Windows Server 2003 servers). In both cases this characteristic is
> frustrating to say the least!
>
> There are no errors it simply kicks me off and then leaves me to
> either reconnect to the now disconnected session, or just wait for the
> server to respond after it idles for several minutes.
>
> Is this likely to be a configuration issue on the Netgear router?
>
> This issue is affecting both XP Professional SP2 users, and Vista
> Business users.
>
> Thanks in advance for your help!

Hi Robert,

Perfect! Your advice is spot-on. Applying the new registry subkeys re
MTU size has fixed the issue on my XP machine and I have remained
logged in to a Windows 2000 Server via RDC for over 60 minutes without
being disconnected. I'm just awaiting one of my Vista-enabled
colleagues to apply the fix and test it for me...

Many thanks

Simon

Notorious1 · Joined: Dec 06, 2007 Posts: 1

Hello, Did you end up changing the MTU for VPN connection? How do you know what it is set to already?

PLEASE HELP!

Thnks

TWock · Joined: Apr 30, 2008 Posts: 1

Hi,

information on how to change/find the optimal MTU can be found here http://www.howtonetworking.com/VPN/mtu1.htm.

I don't bother with all that anymore, because fixing the MTU and other hardware/protocols settings doesn't immune you from usual ISPs Internet problems/connections while transiting on the web. I use a much simpler and powerfull VPN software called WallCooler, from http://www.vedivi.com, that has automatic reconnections build-in, so I'm not really impacted by connections drops or momentary IP packets losses/timeouts. I'm sure other solutions are good out there but this one has all the VPN features I was looking for.

Why make it complex when it can be done simply....

pappu · Joined: May 21, 2008 Posts: 4

Dear brother, I m also getting same problem to get remote desktop sharing. I m using Zxwall 2 Plus VPn router but remote user cant access remote desktop. How can I edit registry sub key . Would u plz brother help form me.