Network bandwith tool

I am looking for a free network bandwith tool. I am trying to find out which computers on our network are using the most bandwith.
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Ernie BeekExpertCommented:
Have a browse through:

Might be something you like there :)
Khandakar Ashfaqur RahmanExpert/ConsultantCommented:

You can monitor traffic into several ways.One of the popular software is Cacti.Cacti is open source and there is windows version too.You can see graph.But the problem is you have to configure SNMP into each device individually.And it is only monitoring software.You can't control bandwidth by Cacti.

Are you using Linux machine as gateway/router ?Then you could use 'iptraf' to monitor traffic and connection and you have to set a standard script for controlling traffic.Check the following link for iptraf:

If you use Cisco Switch then you can restrict bandwidth into switchport and monitor bandwidth by Cacti.

If you use Windows XP as gateway then you could monitor bandwidth by Cacto and could use Traffic shaper freeware for Controlling traffic.But it is very limited.

But I'd suggest you to use Mikrotik Routerboard  as gateway/router for several reasons:

Cheap and reliable,BW Manage and monitoring,Firewall,Routing feature,Graph Management,Hotspot,traffic monitoring,Easy access  from anywhere and so many.    Select routerboard and choose your product.

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