Used IP on Network

[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

 

[Pegasus \(MVP\)]

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

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.

 

[George]

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.

 

[Pegasus \(MVP\)]

It was actually a multi-post. Try cross-posting next time - it
works very well!

 

[goarilla@work]

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.

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