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We have 25Mb up and down fibre channel Internet  connection and the end users vary on their connection speeds.  They are using Windows XP sp3 at home and connecting through a VPN_SSL tunnel on a sonicwall NSA 2400 via RDP to a windows XP SP3 machine here. They are having difficulty with the lag time for the refresh on their displays and mouse clicks and movement seems clunky.  I have run MRTG to monitor the traffic on our Internet connection where the tunnels are located and it never really gets past 30 to 40 percent utilization so I think bandwidth on our end isnt the issue.  Since we are not downloading the files and modifying them on their local machines but only pushing mostly video refresh data, I was wondering if there might be any encapsulation overhead or protocol overhead adjustments we can make  that might help.  Any help is greatly appreciated.  Thanks
_matt

asked 12/01/2011 04:28

santacruzjt's gravatar image

santacruzjt ♦♦


13 Answers:
Unless they are connecting to a Windows 7/2008 R2 machine with RemoteFX I imagine that this is painfully slow!  You might want to consider a third-party solution...
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answered

lamaslany's gravatar image

lamaslany

Sorry; I should have provided an example... :)

You might want to look at something like http://hdx.citrix.com/hdxrichgraphics as even RemoteFX may not be sufficient by itself.  CAD packages are notoriously poor performers over Remote Desktop sessions...
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answered 2011-12-01 at 12:37:28

lamaslany's gravatar image

lamaslany

Right, I have read up on AutoCAD, however, most of the processing is done on the server end.  The renderings are NOT necessaritly hi resolution.  But we do want large resolution.  If that makes sense.  I guess the next question would be,  can cut down on the color depth and save some bandwidth.
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answered 2011-12-01 at 12:41:45

santacruzjt's gravatar image

santacruzjt

I agree that you should look into some third party applications as the Windows RDP can become very cumbersome. Since the end users are going from Windows XP to Windows XP then I would suggest trying another Citrix application: GoToMyPC
http://www.citrix.com/English/ps2/products/product.asp?contentID=13994&ntref=prod_top

you can run this for free for 30 days as a trial to see if the connection problems clear out.
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answered 2011-12-01 at 13:03:09

silverkorn's gravatar image

silverkorn

Does the gotomypC work over a tunnel as well?  I will read up on it.  Thanks
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answered 2011-12-01 at 13:07:03

santacruzjt's gravatar image

santacruzjt

You could also trial Ericom Blaze:  http://www.ericom.com/ericom_blaze.asp?URL_ID=708
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answered 2011-12-01 at 13:09:47

lamaslany's gravatar image

lamaslany

I believe that the software utilizes an internet connection for connectivity and should not require the VPN tunnel.

GoToMyPC White papers:
http://www.gotomypc.com/remote_access/gotomypc_overview

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answered 2011-12-01 at 13:10:06

silverkorn's gravatar image

silverkorn

You can also try LogMeIn Pro, which is similar to GoToMyPC but cheaper:
https://secure.logmein.com/products/pro/
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answered 2011-12-01 at 13:24:06

silverkorn's gravatar image

silverkorn

Ive used this for graphical work, and it seems to perform quite well. I think they compress the picture better.

www.winflector.com
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answered 2011-12-01 at 13:40:46

DanJourno's gravatar image

DanJourno

The Winreflector looks promising, I am going to try that.  However, it seems that is mainly used for running one application or a certain numbers of apps.  We really need to be able to have the client get full access to the host machine.  I should say that part of this is the display overhead, we are sending data for two remote displays.  Each client machine has two displays over RDP.  It seems to work with the new version of RDP 6.1.700, - I think, -  but there is just a little lag time in the redrawing of the pictures and the mouse events are a little "dragged" or choppy.  I was hoping to get more information on possible settings and tweaks  to the VPN_SSL settings, or the protocol  and port settigns of RDP to perhaps affect an increase.  From what I have read elsewhere, and please correct me if I am wrong, is that RDP is really two protocols and that one is handling the overhead  and one is actually handling the data stream. Again, any insight or suggestions is appreciated.

thanks
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answered 2011-12-01 at 14:43:34

santacruzjt's gravatar image

santacruzjt

instead of using the VPN tunnel you could setup a port forwarding routine for the users. This method will be less secure as you are now opening the RDP connection from the workstation to the internet but it will cut out the SSL VPN overhead. Just make sure to enforce a strict password policy and set the port number for the forwarding to something high in value.

another option is to decrease the quality of the display, size of display and the amount of colors used. But my guess if your users are complaining about slow movements now the decrease in quality of display will also create some grief.

here is another article about increasing the performance on RDP 6.x
http://www.tomshardware.com/forum/146865-45-remote-desktop-connection-speed
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answered 2011-12-02 at 06:33:06

silverkorn's gravatar image

silverkorn

i copied the wrong article, this is the one to read through for performance using RDP 6.x
http://blog.tmcnet.com/blog/tom-keating/microsoft/remote-desktop-slow-problem-solved.asp
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answered 2011-12-02 at 06:50:12

silverkorn's gravatar image

silverkorn

Hi,

Take a look at terminalserviceplus.com - it's a multi-user RDP solution for Windows XP, Vista etc. but uses less resources etc.

You may find it a better solution that what you're using? 15 day free trial should help you and it comes with its own VPN.

Regards.


RobMobility.
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answered 2011-12-02 at 06:50:54

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RobMobility

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Asked: 12/01/2011 04:28

Seen: 570 times

Last updated: 12/05/2011 06:07