 | The 'Unreachable' connection status typically pops because the host that is being monitored is has been shutdown or is in reboot phase, there could be other reasons however the network that not accessible (because of differing subnets perhaps) or there is some sort of IP filtering or firewall that is somehow "blocking" access. |
 | You will need to confirm with the sysadmins if there are any iptables running on these probe hosts or are they residing in a network that has a firewall between them and the gateway's network Also, you may need to specify the "Source IP" in the advance tab of the plugin. |
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