I had my VPN users download a 12.8MB folder, over our VPN connection from home and record the amount of time that the download took. I also had them upload the same 12.8 folder over the VPN, to our server in the office and record the time it took. Below are the results:
Test 1 (regular internet speed at our office location 22Mbps download, 5Mbps upload)
User A: 285 Seconds Down, 85 Seconds Up
User B: 22 minutes download, 5 minutes upload
User B: 1 minute 2.1 seconds download, 3 minutes 2.6 seconds upload
I then upgraded our internet speed temporarily for a second phase of tests, as follows:
Test 2 (internet speed at office location 50Mbps download, 10Mbps upload)
User A: 265 seconds Download, 100 seconds Upload
User B: 20 minutes download from server, 5 minutes upload to server
User C: Download 37 seconds, Upload 5 minutes 44.7 seconds.
We have Comcast cable internet (business) at our office location. Based on the above data, please let me know whether my VPN speed is slow and what you recommend. We use a SonicWall SSL-VPN 200 device.