Nagios service monitor agent

 This addon allows you to send service check results to a central
 monitoring server running Nagios in a reasonably secure manner.
 .
 Nagios is a monitoring and management system for hosts, services and
 networks.
 .
 Nagios' features include:
 .
  - Monitoring of network services (via TCP port, SMTP, POP3, HTTP, NNTP,
     PING, etc.)
  - Plugin interface to allow for user-developed service checks
  - Contact notifications when problems occur and get resolved (via email,
     pager, or user-defined method)
  - Ability to define event handlers to be run during service or host events
     (for proactive problem resolution)
  - Web output (current status, notifications, problem history, log file,
     etc.)
 .
 Nagios was written in C and is designed to be easy to understand and modify
 to fit your own needs.