Am I expecting Too Much?

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1

I connect to my work’s network through the Netextender app and just can not get any better throughput greater than 850KB/Sec. I need to access large PDF files-up to 500mb and it’s just brutal. Both ends have fast internet, 300mbps/100mbps. Is this just the nature of the beast? Our Sonicwall is TZ350.

2

I was once told by support that VPN connections are maxed out at 2MB, no matter your ISP speeds. Sonicwall recommends their VPN appliance (SA series) if you want to be fast. For that reason, we setup either RD Gateways or starters to move data to the cloud. You can test the speed by changing the firewall VPN settings to tunnel all and running a speed test and maybe get some sort of reading of throughput.

3

You’ll get better throughput with the Global VPN, but if you want MFA, you’ll have to authenticate it with RADIUS and handle MFA at the RADIUS server.

I use NPS with the Azure plugin.

SSL VPN is always much slower than IPSec, there’s just a heck of a lot more overhead.

4

What protocol are you accessing the files by? Depending on the file transfer protocol things like latency become huge hurdles to speeds. That being said I’ve seen between 2-4Mbps as a normal throughput using SSLVPN. The SMA units have quite a bit better performance 8-16Mbps over SSL.

5

This is not normal. There is a problem somewhere - but unfortunately there are a lot of variables on the table. Are you connected via wifi on your end? What is rated UPLOAD speed of both connections? How many simultaneous NetExtender users are active?

Also, you should be remote controlling a computer at the office, not downloading documents to edit, then uploading them again. Please tell me you are not trying to run AutoCAD or Revit over a VPN…

6

How does a PDF get to 500mb in size?

7

Make sure that both of your connections actually get 300/100

https://www.sonicwall.com/support/knowledge-base/gvc-degraded-internet-throughput-from-local-isp-even-though-connected-in-split-tunnel/200423032255090/

8

Netextender is a ssl based VPN. Oyu should use ipsec based as global client software. If you want to improve your bandwidth disable all security service on ssl vpn zone and check interface bandwidth settings.

9

try this…

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powershell Disable-NetAdapterRsc -Name Wi-Fi

https://www.sonicwall.com/support/knowledge-base/global-vpn-client-slowing-down-the-internet-speed/220518184308230/

10

Listen to this guy, he’s right. I assume he’s using SMB for file transfers and latency will KILL your transfer speeds. Setup an FTP server and compare the transfer speeds side by side.

11

Wifi on my end. 100mbps up on both ends. 2-3 users at any given time, but they are not accessing the plans. Plans are only opened, uploaded or moved around from my end. File size ranges from 2mb-500mb.

12

Architectural plans.

13

Wait until you work with Graphic Design files from InDesign that haven’t been optimized. :slight_smile: 1GB+ *shudder*

14

Thanks, I had done that. No change.

15

I have done this, unfortunately it did not help.

16

Well, the first A/B test you can do to narrow down the suspects is to connect with a wire, disable wifi on your computer and compare that performance with what you are seeing when on wifi.

I don’t understand the bit about “Plans are only opened, uploaded or moved around from my end”. Does that mean you are running AutoCAD or Revit on your local machine opening a datafile that lives at the office over a VPN? If so, then I don’t think there is much to do to improve your situation. AutoCAD and Revit both move a ton of data around (although, I will admit in the latest version, Revit is better than it was).

17

Have you tried using global VPN client or even L2TP, also have you tried connecting from a different computer?

18

I have tried wired connection with multiple computers, same result.
For the plans, I am opening them with Bluebeam or Adobe, downloading from different sites, depositing them into folders, moving files around on the companies NAS. If I need to edit the plans, I download it locally, work on it, upload it back-painfully slow download/upload speeds.

I also open/edit Excel or Word docs constantly. It’s also very slow to open, save and these files are only 50k-300k.

I am open to any solution to make this process faster.

19

Have not tried global vpn or L2TP, but all computers connected regardless of bandwidth, locations experience exactly the same issue.

20

You should be connected via IPsec not SSL

I use SSL VPN for management of the box itself as public access is turned off obviously

Speak to your IT team