Get ip address of pcs on my network

davholla · 07-04-2007, 03:22 PM

How can I get the IP addresses of my machines which are attached to my wireless network ?

ilikejam · 07-04-2007, 03:39 PM

Hi.

Depends on your network.

Code:

nmap -sP 192.168.0.2/24

would scan all the 192.168.0.X range.

Dave

camorri · 07-04-2007, 03:40 PM

If you have a router, they usually can be displayed in the router.

win32sux · 07-04-2007, 03:50 PM

Yeah, the best place to get this info is probably on the router's ARP cache.

To view the arp cache, use the arp command:

Code:

arp

coolb · 07-05-2007, 07:28 AM

if you dont have the tools(or the know how) ask the network admin. He should know

Capt_Caveman · 07-05-2007, 11:58 AM

Yeah, the best place to get this info is probably on the router's ARP cache.

A nice trick to go along with this is to ping the network broadcast IP just before checking the ARP cache. It will cause most systems on the network to reply, thus updating the ARP cache.

On wireless networks, another convenient method is just sniff traffic in promiscuous mode as some routers won't store info on associated hosts unless they're DHCP clients.

teckk · 07-05-2007, 08:36 PM

http://www.fping.com/

fping is a handy little CLI utility that will scan a network and report the IP or Hostname of anything hooked to it. It has a lot of options. Look at the man page.
Examples

Code:

fping -ag 172.16.1.1 172.16.1.100

will report the IP of anything that is alive from .1 to .100

Code:

fping -agd 172.16.1.1 172.16.1.100

would give you the hostnames of anything alive .1 to .100

You can also make a menu item to launch a terminal from within X, it will show you the results for a few secs then exit. Xterm will display as long as it take to scan. So scan farther than you need to.

Code:

xterm -r -e fping -ag 172.16.1.1 172.16.1.200

ilikejam · 07-06-2007, 04:15 AM

Quote:

Originally Posted by teckk

Xterm will display as long as it take to scan. So scan farther than you need to.

You might want to use the '-hold' xterm flag, i.e.

Code:

xterm -hold -r -e fping -ag 172.16.1.1 172.16.1.200

Dave