Network bandwidth monitoring utility

Hello,

Recently our internet bandwidth has been slowing down drastically. We are suspecting certain staff are streaming music or video during the working hours either on smart devices, tablets or possibly company computer within the network. We would like to know if there are any recommended solution or network bandwidth monitoring tool out there that we can use to perform a test on our network.

Thanks,
lappladminAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
You haven't indicated what kind of bandwidth you should have.   Most folks get 10+ Mbit/second these days, at least in my area, and no one user will have that much of a negative impact from watching videos.

Music streaming is a very low bandwidth thing and would not likely be causing you problems.

There's little you can do without expensive network monitoring software especially if you don't have managed switches.  If you have switches with management capabilities, you may be able to see which ones are using up a lot of data at the time you're experiencing problems.

There's a blog you can read here:
https://blog.paessler.com/a-step-by-step-guide-figure-out-whos-hogging-your-bandwidth

But the most effective means is probably just to stroll over when problems occur and see what they are doing.  

I would suggest if you don't already have in place a network usage policy, develop one and get everyone to sign off.  And if you're not taking security seriously, start, and setup a segregated network for employee devices where you limit the bandwidth available to it.
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Prabhin MPEngineer-TechOPSCommented:
Hi,
Use bandwidthd application if you are familiar . you can setup this in linux distribution and while configuring you can mention what all interfaces needs to be monitor.
Please find the following link,

http://bandwidthd.sourceforge.net/
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Pushpakumara MahagamageVPCommented:
I'm using bandwidthd darkstat and ntopng

https://www.ntop.org/products/traffic-analysis/ntop/. you can fined step by step configuration guides.

and netpersec is a small tool you can keep it on PCs and PC user can monitor their traffic from this tool.
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Peter SchultzSenior Network AdministratorCommented:
You should use your routers capabilities. Most business routers have analysing capabilities. What type of router do you use for internet connection. How do your users go physically to the internet ? E.g. computer - switch - Cisco router - internet.
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lappladminAuthor Commented:
Thanks guys for all the great feedback. i'll split the points evenly.
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