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Port Monitoring
Posted: Mon Oct 10, 2011 5:54 am
by nagiostool
Hi i'm trying to monitor a port by using port monitoring wizard but when i have tried to monitor a port number 6129 which is used by DamWare application i'm getting error as socket timeout after 10 seconds i have mentioned TCP port.
Thanks in advance
Re: Port Monitoring
Posted: Mon Oct 10, 2011 10:37 am
by nscott
Can you test the port using the CLI plugin? From the command line of your nagios XI server go to the libexec directory
cd /usr/local/nagios/libexec/
And then execute this:
./check_tcp -H <your server address> -p <port number>
Re: Port Monitoring
Posted: Tue Oct 11, 2011 6:51 am
by nagiostool
i have run the command in /usr/local/nagios/libexec
as ./check_tcp -H 192.168.10.120 -p 6129
result was
Connection refused.
Re: Port Monitoring
Posted: Tue Oct 11, 2011 11:31 am
by nscott
Well then the port is probably closed. Can you try to telnet into that port? Are you absolutely sure the DamWare application is actually using that port?
Re: Port Monitoring
Posted: Wed Oct 12, 2011 7:31 am
by nagiostool
i was able to telnet to that port , didnt get any error.
Damware uses that port only
Re: Port Monitoring
Posted: Wed Oct 12, 2011 11:01 am
by nscott
Is the DamWare using udp? Try the check_udp plugin instead of the check_tcp plugin.
Re: Port Monitoring
Posted: Thu Oct 13, 2011 3:12 am
by nagiostool
while using UDP what should be entered in the send string and expected string coloumns ??
Can you guide me ??
Re: Port Monitoring
Posted: Thu Oct 13, 2011 11:13 am
by nscott
There is a pretty good breakdown of all the flags here:
http://nagiosplugins.org/man/check_udp
But the send string is the string that you would send to the server, and the expected string is the string it should send back. So if you were testing HTTP, you would send it a SYN string and expect an ACK string back. Thats what thats for.
But I would just test to see if its open, all arguments besides hostname and port are optional.