Slow internet - due to unknown uploads

I have a client who is experiencing slow internet connection

ISP has told us it is to do with uploads being taken up bandwidth

anyone know a quick and easy way to detect which devices are using upload traffic

Router is TP LINK Archer D7

Thank you
Paul-Anthony DableyThinking Forward - Forward ThinkingAsked:
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masnrockConnect With a Mentor Commented:
You have to get a network monitoring application like Kimberley has pointed out, with PRTG being a good example. Checking all systems on your network for malware is another good solution.

Are you using any cloud applications such as OneDrive? Another thought is if there is a server on the network or if there is a lot of video chat going on.

A longer term solution I would recommend is getting a computer, making sure it has 2 NICs in it, and setting up Untangle on it. Free version will contain a number of better features for you. That way you'll have some sort of real firewall. Then you would be able to turn the existing router into an AP.
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Paul SauvéRetiredCommented:
are you sure the PC is not infected with malware?

How to remove malware from your Windows PC
Is your computer running slower than usual? Are you getting lots of pop-ups? Have you seen other weird problems crop up? If so, your PC might be infected with a virus, spyware, or other malware—even if you have an antivirus program installed. Though other problems such as hardware issues can produce similarly annoying symptoms, it’s best to check for malware if your PC is acting up and we’ll show you how to do it yourself.
http://www.pcworld.com/article/243818/security/how-to-remove-malware-from-your-windows-pc.html
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Paul-Anthony DableyThinking Forward - Forward ThinkingAuthor Commented:
Thanks for your reply
The network has 2 server, 10 workstation 7 wireless devices
all experiencing slow internet speeds
ISP has confirmed that our upload usage is very high
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Paul SauvéRetiredCommented:
my understanding of 'Upload' is that information is moving from the network to the outside, whereas 'Download' is from the outside to your network.

this being the case, you have to make sure that there is nothing uploading from your client's network that is eating up bandwidth.

has this been happening for a long time?

are all of the devices connected to the Internet simultaneously?
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Paul-Anthony DableyThinking Forward - Forward ThinkingAuthor Commented:
You are right in what you are saying
This is a business network been operating for a while without any problems
Nothing has changed from what we can see; we
 need to figure out what is cauisng us the problem
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rindiCommented:
As already mentioned, look for viruses/malware.

Besides that, what OS's are you using? Windows 8.x and 10 include many m$ store crapps, and many of those, if not disabled or turned off, "phone home". As all of those crapps are useless anyway you should remove them.
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Kimberley from PaesslerConnect With a Mentor PRTG Product EvangelistCommented:
Do you have any network monitoring in place?  PRTG Network Monitor will show you how much traffic you have in/out using SNMP.  And, if your router supports it, you can use netflow to determine what machines/protocols are taking up all the traffic.  If the router doesn't support netflow, you can use the PRTG "packet sniffer" sensor instead (but netflow would be easier).

To get an idea of what this would look like in PRTG, here are two videos about how to monitor traffic:


We offer a free 30-day trial version with unlimited sensors, which will automatically revert to our 100-sensor freeware version after the 30 days.
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Paul SauvéConnect With a Mentor RetiredCommented:
here is a list of choices for other network monitoring software: Top Network Monitoring Software Productshttp://www.capterra.com/network-monitoring-software/
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Paul-Anthony DableyThinking Forward - Forward ThinkingAuthor Commented:
Thanks everyone for your help, much appreciated
we ended up going through the router and going through firewall path through settings
It ended up being that port 389 and 636 were open and directed to the AD that was causing the upload issue,
closing these ports off stopped the issue from occurring,
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