nmap -sP only sees its self

rednuht · 02-20-2008, 07:55 AM

I run

Code:

nmap -n -sP 192.168.0.0/24

from my gentoo machine as privilaged user and get back the 4 hosts I expected, but
the same command line from a Debian based NSlu2 running as root only returns the IP address of the Debian box.
The NSlu2 can individually ping the other ip addresses so what can I do to allow nmap to do the same ?

FYI

Code:

-n

is not not resolve host names, just return IP address.

Code:

-sP

tells namp to not try and scan the host after pinging it.

Code:

192.168.0.0/24

is the entire subnet I am using.

rednuht · 02-20-2008, 03:28 PM

I rebooted the NSlu2 for an unrelated reason and now it works.
guess a apt-get install nmap requires something to restart ...