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Nagios Core - How To Monitor A Publicly Available Service (HTTP, FTP, SSH, etc.)

This document describes how you can monitor publicly available services, applications and protocols. By "public" I mean services that are accessible across the network - either the local network or the greater Internet. Examples of public services include HTTP, POP3, IMAP, FTP, and SSH. There are many more public services that you probably use on a daily basis. These services and applications, as well as their underlying protocols, can usually be monitored by Nagios without any special access requirements.

Documentation - How To Monitor A Publicly Available Service (HTTP, FTP, SSH, etc.)

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