Check_tcp - port monitoring best practice

[Deborah Martin]

Hi,

I just wondered what would be the best practice for monitoring ports. 

At the moment we specify 10,20,25 seconds for ok, warning and critical alerts. Is that too little - we are seeing a few critical alerts generated and wondered if 
increasing the thresholds would be better. 

What does a "socket timeout" generally mean as some of the ports we're monitoring are on systems which are idle at the moment. 
Could these be caused by network glitches between the nagios box and the target ports - the systems we're monitoring aren't local on the nagios network but in different parts of the world. 

I wonder if a local nagios instance would be better to try and reduce "socket timeouts" as otherwise people oncall are going to get called out quite a lot.... (?) 


Any input / ideas would be really appreciated. 


Regards,
Deborah 
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