light and fast high availability port monitor

 High Availability Port Monitor (HAPM) is an application to check the local
 ports status. It is a simple, light and fast daemon to check TCP/UDP ports.
 .
 HAPM works with Heartbeat daemon. Heartbeat is an essential element used
 in high availability projects.
 .
 If one or more monitored ports (per IP) go down then the primary
 Heartbeat will be killed by HAPM and the secondary host will take over
 virtual IP.