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We have around 300 machines. How can we monitor the network using an Ubuntu machine so that we can find out which node is broadcasting, traffic monitoring, also trying ntop.

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5 Answers 5

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You can use snmpd Install snmpd and cacti Install cacti

Check out this guide

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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 debuntu.org" rather than "this link" as it is more descriptive and doesn't break if debuntu.org goes off the net.
    – msw
    Dec 24, 2010 at 15:53
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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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