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Monitoring bandwidth use and abuse

Hi, wanted to ask if there is a simple utility that can show me the list of lan users and their current bandwidth usage?

something like the router lan clients page would be great

bonus points if it has alerts when someone gets over a certain limit

a sub-question is:

Can I block torrent downloading as a protocol, even though my vigor router does not specifically allow protocol filtering? We are in a Windows 2003 Server domain.
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darkbluegr
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darkbluegr
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4 Solutions
 
JuanCarnigliaCommented:
Consider implementing a Linux Distro already set up for IP & Traffic Shaping.

http://www.zeroshell.net/eng/

Enables Traffic Shaping, and P2P filtering, and it's free.

Greetings.
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dee_nzCommented:
Try PRTG Network Monitor http://www.paessler.com/prtg

You can use it to monitor the workstations on your network then get a top 10 report showing the highest bandwidth usage which will help you track down which workstation/user is using the most network bandwidth. You can also setup email alerts/notifications for the bandwidth sensor using PRTG.

For blocking uTorrent - can you please post the make and model of your router?
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darkbluegrAuthor Commented:
Thanks for the replies - using a vigor 3300 right now.

Wondering if its better use of money to invest in a lower-end cisco router or buy a lan monitoring/management software...
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expert_tanmayCommented:
Consider using packettrap (http://www.packettrap.com/product/pt360_pro.aspx). The pt360 Tool Suite is free and covers lot of features along with monitoring. It comes with out of the box support for MS Exchange, SQL, and Active Directory. It monitors to help IT Admins and network engineers prevent application failures and identify degradations early.

Cheers
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dee_nzCommented:
Hi again,
It’s not easy to configure a firewall to block uTorrent because torrent clients use different ports and let people easily change the ports they're using if you try block them.

You should configure your firewall to allow only the network traffic that you want and then block everything else - that should stop people being able to use uTorrent. Be careful though - if you change this you it will break any network application that you have not specifically allowed through the firewall. It’s a good way to find out what’s using the network and its best practice to configure firewalls in this way.

I guess the other problem you have is that people have been installing uTorrent on their PCs on your network?
You need to make sure that users do not have admin rights on their workstations – this stops them being able to install lots of junk and changing settings etc – making your job harder.

Have a look at Goverlan – it gives you lots of tools for administering your desktops.
http://www.pjtec.com/Products/Goverlan/index.html
For example you could use it to generate a report of all the workstations on your network that have uTorrent installed!

PRTG is really for network monitoring. What is the underlying problem?

Being able to monitor everything your network? – PRTG
Monitor network bandwidth usage? – PRTG
You suspect that uTorrent (or something else) is using all your network bandwidth?
- Re-configure your firewall to block all unwanted traffic.
You suspect that people have been installing & using uTorrent and other unwanted applications on your network - Re-configure your firewall and use Goverlan to get a report of applications installed on workstations.

Just my thoughts anyway, hope that helps...
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expert_tanmayCommented:
If you are looking at monitoring bandwidth and stopping torrent best would be to use transparent proxy like squid.

Cheers..
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darkbluegrAuthor Commented:
good info thank  you~
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