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Posted by Rick Merrill on March 29, 2008, 5:56 pm
Mike Drechsler - SPAM PROTECTED EMAIL wrote:
> r042wal wrote:
>> Why do database applications not work well over VPN? I have tried a
>> few proprietary applications that are SQL driven and they are
>> painfully slow, but even something as simple as ACT or QuickBooks will
>> not work well over VPN. What is the reason behind this?
>
> Because the latency and speed of your VPN are slower than the local LAN.
> Unless you have symmetric 100 megabit connections to the Internet for
> both locations it's just not going to be as fast as connecting on the
> local LAN.
>
> If your ADSL connection runs at 640Kbit/s upload and you are comparing a
> 100Mbit/s LAN you can see the difference.
>
> 100 vs 0.64. The VPN connection is up to 156 times slower.
>
>
>
But you have to ask why is that speed being used SO MUCH - the answer is
probably that your computer is trying to read through files that are on
the VPN system - this is very inefficient. What you want is a
client-side (your computer) that gets results from a server (at the
other end of the VPN) which is where the data files are scanned.
It is Not just about the speed.
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