Hello everybody, here is my problem, i got an active directory server with hundreds users/machines connected to it there is a dhcp server allocating IP to any computer connected to the network today an "unknown" workstation got connected (i knew it because it was infected by a virus spamming the dns server), so i wanted to get some infos about it it wasnt shown on my active directory, and i know it wasnt connected to the domain i tried to log on the ip using a windows 7 connected to the domain, so i wanted to get the name of the computer, but no way to get it simply "nbtstat" didnt find "nslookup" didnt find "ping" didnt show the name only "tracert" finnaly showed me the name of the computer (so then i managed to log on the local account it using the syntax "COMPUTER_NAME\Administrator") so i wanted to know which protocol "tracert" is using to get the name and also what is the best way to get a station name which is on the network but not on the domain and only knowing the ip address sorry for my bad english thanks