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Linux Journal: Network Monitoring with Linux

Feb 26, 2000, 20:35 (2 Talkback[s])
(Other stories by Tristan Greaves)

"Are you having trouble keeping your network under control? Here is an introduction to NOCOL: the freeware network monitoring system which will help you keep instability at bay."

"NOCOL, Network Operation Center On-Line, enables a designated machine to host a collection of network monitoring agents. These agents can perform a variety of tasks, from checking that a machine is ``up'' using the ICMP ping method to ensuring that a remote web server is operating as it should by requesting a test page. This allows problems on a network to be diagnosed and reported in a variety of ways, be it by e-mail, web page or dedicated terminal."

"As an example of NOCOL's flexibility, I coded an extension to the notifier tool, which utilized our internal SMS messaging system. This allowed text messages describing CRITICAL problems to be sent to my mobile phone. This was done by coding an e-mail front-end to the SMS gateway, so all notifer had to do was fire off an e-mail in the correct format."

"In essence, NOCOL has proven itself to be an extremely useful tool. It has alerted us to network problems as soon as they occurred, and the fact that it is freeware (it comes under a ``not-quite-GPL'' agreement) is just another example of great software under Linux being available for no cost."

Complete story.