Slow File Transfer over VPN

sliknick1028
sliknick1028 used Ask the Experts™
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What is the best way to increase the file transfer and network application (ex. Goldmine or Jobtrack) speed over a VPN?  We are currently using the Astaro 220 SSL VPN as our VPN.
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Top Expert 2013
Commented:
There is nothing you can do to improve performance over a VPN other than obtain an internet connection with a higher performance rating.  Keep in mind it is the upload speed that is the limiting factor, not the download speed.

Having said that it is never a good idea to access a database over a VPN, there is a great risk of data corruption due to the slow link and possible dropped connections.  Goldmine recommends nothing less then 100mbps. You will never achieve 1/2 if that with the best internet connections.
What's the BW of your connection on either end of the VPN? Are all services slow over the VPN or is more specific to the app traffic?
Commented:
I agree with RobWill that VPN's are not really ideal here, however, if you and your users are the cause of the slowness, not general internet congestion, you can do something to help a bit.

Say the fact that someone is streaming video or audio at one or both of the locations is the cause of congestion, and you do have internet connections that are 10meg or greater...

You probably could see benefits from using WAN optimization solutions from companies like riverbed or Packeteer. You would use them to prioritze your important traffic.

http://www.riverbed.com/us/solutions/wan_optimization/

http://www.packeteer.com/products/packetshaper


Ultimately, though, you would be better off with something like MPLS and using diffserv EF frames tagged on the frames for you application and file transfers.

If you need conulting help with either solution, I'd be glad to have someone in our company assist you locally.
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GMGeniusSoftware Development Manager/Developer

Commented:
What version of GoldMine are you using?, have you considered Remote Desktop instead then the VPN speed wont be as much of a factor as all the processing will be on the server.

Terminal Services or Citrix is the best choice
AkinsdNetwork Administrator

Commented:
VPNs are generally slow partly because of the high security. I envisage better speed performances in the future as technology grows, but in the interim, I recommend looking at other alternatives if speed is critical

Author

Commented:
RobWill gave the overall best answer so I awarded 300 pts.  I also awarded jjester1 200 points for giving suggestions to try in the WAN optimizers.

Thanks Guys!  Sorry for the delay in responding.

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