[raspberry-vi] Re: nmap (was "Re: can't ssh into RPI")
- From: Tim Chase <raspberry-vi@xxxxxxxxxxxxxxxxx>
- To: raspberry-vi@xxxxxxxxxxxxx
- Date: Sun, 17 Mar 2013 20:17:25 -0500
On March 18, 2013, Michael A. Ray wrote:
> Good advice from Tim there. I didn'tt know about nmap and I've
> just grabbed it.
It's more or less the de facto swiss army knife for finding things on
a network. I tend to use two different modes most of the time:
1) find out what is on the network and responding to pings:
nmap -sP 192.168.1.0/24
(note the capital "P")
2) find out what services a host (or multiple hosts, if you use CIDR
notation as above) has open:
nmap -p1-1024,8000,8080,8888 192.168.1.42
This will scan ports 1 through 1024 (the "privileged" or "server"
ports) as well as common "alternate" web-server ports.
There's also a mode that it can sniff what type of server it is
(Linux, BSD, Windows, etc; along with some details about their
versions) or what versions of certain software might be running (such
as "Apache v2.1").
Lastly, use it with care, as some ISPs detect the abusive use of nmap
and may ding you for using it. So stick to scanning
machines/networks that you own or have permission to scan. Don't go
scanning the whole internet.
-tim
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Other related posts:
- » [raspberry-vi] Re: nmap (was "Re: can't ssh into RPI") - Tim Chase
