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We have around 300 machines , how to monitor the network using ubuntu machine so that we can find out which node is broadcasting, traffic monitoring, also trying ntop

kindly advise

Happy X-mas to all and especially to UBUNTU Team and Community

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You can use snmpd Install snmpd and cacti Install cacti

Check out this link

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+1 good recommendations and package links. In general, it is better to say "Check out how-to-monitor-your-servers-with-snmp-and-cacti at" rather than "this link" as it is more descriptive and doesn't break if goes off the net. – msw Dec 24 '10 at 15:53

There are a lot of monitoring solutions out there.

Munin might be an option for your needs, take a look at sysstat and use kSar to visualize the results.

Your choice depends on the needs you have.

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karthick87 has the answer, but just to amplify it your monitoring has to be distributed amongst the 300 end-stations and cannot be simply centralized to one point.

The biggest reason this is necessary is that you are probably using a switched (not shared) network hub so no single point is capable of seeing all the traffic on the net. SNMP is certainly old-school, partly because it works.

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I found this bijk, is free only for one server. Is a commercial solution and you can use it with a lot of Linux distributions (and of course with Ubuntu).

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My personal tool of choice is wireshark. It has a nice gui, flexible filters, and a some analysing tools.

sudo apt-get install wireshark

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