Wednesday, July 19, 2017

networking - Network monitoring












What software would you recommend to monitor a network? We have a main server which acts as a DNS among other services. And we would like to monitor network activity: what protocols are being used, bandwidth, etc.



Kind of a Big Brother thing, to know when a user tries to login to his personal mail account on GMail, Hotmail, etc. or uses an external IM account, things which are not permitted under the company's rules. And if possible, block these access (or being able to know about it, in order to take the correspondent disciplinary actions).



I've read Nagios is a monitoring service, is this the solution we are looking for? What other open source alternatives are there?


Answer



Nagios is a solid open source solution, the plugin architecture means that nagios basically provides a framework for monitoring to occur, and then you can plug in the exact monitors you need. Since nagios is fairly popular, there are a ton of monitoring modules already in existence.



Nagios is mostly a real time monitor, not a reporter. I know there are ways to pass the real time nagios data up to a reporting app like cacti or munin that produce some lovely graphs.



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