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Centos problem

02-17-2014, 09:50 PM
Brand new vps running Centos 6.4.As root I'm attempting to use nmap to check on a server of mine. Every time I get the following error from nmap:
Note: Host seems down. If it is really up, but blocking our ping probes, try -Pn

The host isn't down.If I use the -unprivileged option it works ! This suggests that the vps doesn't have raw socket privileges or nmap is having a problem with the Cenros configuration. Any ideas?