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Zabbix: how to monitor Radius (and other services) with external check items and netcat (nc) - Pierky's Blog
You can monitor Radius (and other services too, such as DNS and other) with Zabbix external check feature and netcat (nc). How do external check items work? “External check” items are monitored by Zabbix using external scripts, running on the server; you can create your own scripts and put them in the ExternalScripts directory, as …