Used IP on Network

  • Thread starter Thread starter George
  • Start date Start date
G

George

Hello,
Aside from using DHCP, is there a dos command that I could use to see
all the IP addresses that are currently being used and active on the
network? I have a router someone had setup and didn't document the
internal IP address, I'm trying to find out what it is.

Thanks,
George
 
George said:
Hello,
Aside from using DHCP, is there a dos command that I could use to see
all the IP addresses that are currently being used and active on the
network? I have a router someone had setup and didn't document the
internal IP address, I'm trying to find out what it is.

Thanks,
George
Click to expand...

You could use "Angry IP Scan" from http://www.angryziber.com/ipscan/.
It has a graphical user interface, so you don't need to run it
from the Command Prompt.

Alternatively you could run this command from a Command Prompt:

for /L %a in (1,1,254) do telnet aaa.bbb.ccc.%a 80

It will clear the screen when it finds a device listening on port 80,
e.g. a router. Replace "aaa.bbb.ccc" with your own subnet address.
 
Thanks Peg!!
Sorry about the x-post.
George

You could use "Angry IP Scan" from http://www.angryziber.com/ipscan/.
It has a graphical user interface, so you don't need to run it
from the Command Prompt.

Alternatively you could run this command from a Command Prompt:

for /L %a in (1,1,254) do telnet aaa.bbb.ccc.%a 80

It will clear the screen when it finds a device listening on port 80,
e.g. a router. Replace "aaa.bbb.ccc" with your own subnet address.
Click to expand...
 
Pegasus said:
You could use "Angry IP Scan" from http://www.angryziber.com/ipscan/.
It has a graphical user interface, so you don't need to run it
from the Command Prompt.

Alternatively you could run this command from a Command Prompt:

for /L %a in (1,1,254) do telnet aaa.bbb.ccc.%a 80

It will clear the screen when it finds a device listening on port 80,
e.g. a router. Replace "aaa.bbb.ccc" with your own subnet address.
Click to expand...

this is not usefull as you'll have to pay attention all the time
for /L %i in (1,1,254) do ping -n 1 "network_portion_of_ip".%i

this is better like this

for /L %i in (1,1,254) do ping -n 1 192.168.1.%i

after that you can do a arp -a
to see MAC address to ip mappings

it's a shame that windows its ping implementation can't ping broadcast
addreses because pinging one host one at a time does take quite a while
 
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