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Finding computers in Network

M

Mayfriday0529

Diamond Member
Having some trouble finding all the computers in the network connected to a router and a switch.

Looking at the DHCP Table only 9 computers show up, but I know there are more but they are not showing up.

I can manually ping some of the known missing computers no the Table.

Is there a program for me to sniff the network for other computers and get their IP addresses and names? or send broadcast ping to all of them?
 
ethereal can let you sniff a network interface, as well as better programs like tcpdump or windump if you're cursed with a Windows machine.

ping should let you send to broadcast addresses (the -b option allows this on Linux I think).
 
angry IP for windows, with the arp plugin works well. May not function if they have a Software firewall and block ICMP
 
GPO of entire domain to allow ICMP
[*]Incoming Echo request
[*]outgoing destination unreachable
[*]outgoing source quench

gpo only for xp with firewall turned on

then download foundstone sl.exe and ping entire subnet, then output to file.
 
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