Nagios Core client monitoring using public IP and port

[pandurangvhare]

Hi,

I am trying to monitor Nagios Core client using public IP and port, but I am getting 0 "zero" output as a result.

/usr/local/nagios/libexec/check_nt -H xxx.xxx.xxx.xxx -v UPTIME -p 12489

System Uptime - 0 day(s) 0 hour(s) 0 minute(s) |uptime=0