Clarification about OP5 SSH monitoring

[Arulappan, Jeromeyesuraj (EXT - IN/Chennai)]

Hi Team,

We are using check_ssh plugin to monitoring our servers SSH services.

We need some clarification about how the this check_ssh plugin checking the SSH 
services in Linux Machine.

Whether the plugin used to  login the server and check SSH service or just 
telnet the SSH port to verify the service.


Thanks and Regards,
Jeromeyesuraj