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Re: Socket Time Out error in the Amazon Ec2 Cloud Instance.

Posted: Thu Mar 03, 2016 6:03 pm
by bwallace
Thanks - running that previous cmd shows with certainty that a firewall somewhere is dropping these packets.
Filtered means that a firewall, filter, or other network obstacle is blocking the port so that Nmap cannot tell whether it is open or closed

https://nmap.org/book/man.html

We'd like to provide suggestions for resolution, but the issue at hand is not Nagios related. It is a network problem and I would start with AWS.
As previously mentioned, let us know if you encounter problems after you've confirmed Nagios XI and the client can establish a tcp connection.