A big question about so-called monitoring services, is what can they actually monitor? At Reactive Networks our technicians pride themselves with the phrase "..If we can access it, we can monitor it!", meaning that if the Reactive Monitor System has direct or indirect access to your services, applications or systems, then we are in a position to provide a complete monitor service for you. 
Amongst the common Targets we monitor, are:
Services: | Ping, HTTP, SMTP, POP3, Telnet, RADIUS, DNS, FTP, SSH, LDAP, RealAudio | Databases: | Oracle, MySQL, MSQL, Microsoft SQL | Resources: | CPU/Server Load, Memory, Disk, Processes, Bandwidth, Temperature and even Voltage levels. |
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