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i need to know if there is any Tool (specifically for FreeBSD) , through which i can get the Realtime network traffic usage of any Host/IP , and which should also run on Multiple interfaces as well? i have tried ntop, but its of no use. tried iftop, but it does not supports merging of multiple interfaces. any other tool to accomplish this task?


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up vote 3 down vote accepted

Maybe systat -ifstat 1 will work for you.

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This will only give the aggregate bandwidth used by each network device (interface) - it doesn't give a host breakdown. – voretaq7 Nov 29 '12 at 16:33
Is it possible to to make systat show data as CSV (comma separated values) for scripting, Jrm? – Sopalajo de Arrierez Jul 12 at 11:55
Not that I'm aware of. I don't see anything in systat(1). – jrm Jul 12 at 15:31

When you say ntop is no use -is that because you had problems using ntop, or that it didn't give you sufficient info?

You could install the pfflowd package which is a netflow emitter - I only played around with it a little and found some netflow collectors didn't seem to like it as it didn't totally conform to standards.

This thread mentions people being happy with Manage Engine's Netflow Analyzer Pro although the thread also mentions the free version only supports one interface. (and you need to run this on a box external to your pfsense)

Also if you are at the console or can ssh in, pftop gives real time info, and according to this thread,11289.0.html the bandwidthd package can also give per ip info.

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If you really need per-IP/per-subnet breakdowns a netflow emitter is really what you need. (You don't need the pfflowd package, though it's pretty friendly compared to the alternative, ng_netflow from the built-in netgraph tools. You will need a netflow collector like flow-tools and a netflow "cruncher" like jkflow to analyze the data...) – voretaq7 Nov 29 '12 at 16:36

I use jnettop on my Linux boxes. It is based on libpcap, so it should work on BSD.

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