Check of the specific port via TCP. This kind of check is useful to monitor network applications. If Ok, the port is open. Failure means or closed port, or complete unavailability of the server. You can use other types of check for further analysis.
The main feature of HostTracker monitoring service is the regular checks of web sites with monitoring intervals from 1 minute. Moreover, the HostTracker’s dedicated global monitoring checkpoints network currently includes more than 140 servers all over the world.