Know The Hidden Command In DOS

Your first step is to find out what commands you can run in DOS. If you type "help" at the DOS prompt, it gives you a long list of commands. However, this list leaves out all the commands hackers love to use. Here are some of those left out hacker commands.

TCP/IP commands:
telnet
netstat
nslookup
tracert
ping
ftp

NetBIOS commands (just some examples):
nbtstat
net use
net view
net localgroup

TCP/IP stands for transmission control protocol/Internet protocol. As you can guess by the name, TCP/IP is the protocol under which the Internet runs. along with user datagram protocol (UDP). So when you are connected to the Internet, you can try these commands against other Internet computers. Most local area networks also use TCP/IP.

NetBIOS (Net Basic Input/Output System) protocol is another way to communicate between computers. This is often used by Windows computers, and by Unix/Linux type computers running Samba. You can often use NetBIOS commands over the Internet (being carried inside of, so to speak, TCP/IP). In many cases, however, NetBIOS commands will be blocked by firewalls. Also, not many Internet computers run NetBIOS because it is so easy to break in using them. We will cover NetBIOS commands in the next Guide to XP Hacking.