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It doesn't matter if utility is for Ubuntu or for Windows XP/7, just need to see what pc is using the most traffic in local network.

Probably some spammer etc on that pc.

Need to get rid of that, before calling to my ISP.

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What about wireshark?? –  karthick87 Dec 23 '10 at 9:35
    
Does it have graphs or something like that? Or overall packets sent/received by specific ip? –  Somebody Dec 23 '10 at 9:52

4 Answers 4

up vote 6 down vote accepted

Wireshark will work if you can span a gateway connection in order to see all the PCs traffic. Otherwise, you'll only see your own.

If your PCs support SNMP, I think your best bet will be a tool like Cacti. This way you run Cacti on a central PC/server, which then polls the other PCs for interface information and graphs the resulting interfaces for comparison.

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Wireshark is the superb tool for doing this. And HERE is the list of all the tools you'l ever need, such as:

  • BWM - BandWidth Monitor
  • port scanner
  • A tool to send magic Wake-on-LAN packets
  • script that quickly measures network device throughput
  • etc...

I also found a lot of bandwidth monitoring tools for Linux HERE.

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+1 on wireshark that really is a wonderful tool (and @Beck you can use Statistics -> Conversations or Statistics-> Endpoints to get a summary of traffic).

You may also find Etherape to be useful. That gives you a realtime graphical representation of where most traffic is coming/going from.

However do bear in mind that whichever tool you use to measure the traffic you will likely need to measure it from your gateway/router because any one individual machine will not see the traffic for the rest of the network due to network switching and various other factors. If you don't have a graphical interface on your gateway machine you could grab a packet dump using tcpdump or tshark

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Better to spell EtherApe, not Etherape (for obvious reasons). –  Gödel Dec 23 '10 at 12:35

Iptraf is a great tool for monitoring LAN Traffic as well as individual traffic,

The tool is handy and could be viewed form terminal itself.

For advanced monitoring i suggest wireshark

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Welcome to askubuntu! This would be a better answer if you were to provide installation instructions. Please edit and add that information. Thank you! –  Elder Geek Jun 21 at 13:38

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