Internet Traffic/Bandwidth analysis

Anyone knows a good tool to analysis internet outbound/inbound traffic/bandwidth?   Basically, we are being charged extra by our ISP because our users have been over utilizing the internet pipe.  We want to analyze what kind of traffic is this, how much is being used and which PC initializes the most download or upload and stuff like that - both inbound and outbound.

Any recommendation is appreciated.

Thanks.
search5354Asked:
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lrmooreConnect With a Mentor Commented:
NTOP will give you great insite into who is using what inside the bandwidth.
http://www.openxtra.co.uk/freestuff/ntop-xtra.php
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Keith AlabasterEnterprise ArchitectCommented:
For bandwidth I use prtg - they provide a trial package you can use.
http://www.paessler.com/prtg/download
For traffic analysis I use ISA server (you can get a 6 month trial version from the MS Site).
http://www.microsoft.com/downloads/details.aspx?FamilyID=F81EEADD-3847-49C9-9625-6E6C6444A0CF&displaylang=en



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The--CaptainCommented:
I second lrmoore's suggestion.

Cheers,
-Jon
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Roachy1979Commented:
I third it - Ntop will do what you need!  

http://www.ntop.org/overview.html 



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Keith AlabasterEnterprise ArchitectCommented:
I expect everyone will object seeing as the asker has not had the curtesy to even reply to the suggestions made.
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lrmooreCommented:
Agree to object...
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Keith AlabasterEnterprise ArchitectCommented:
Vee - NTOP will do what is required therefore the question has been asked

Accept; LRMoore ID:20836586

Cheers
Keith
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