12:30 PM | Posted in
So how do you turn on DOS?
Click All Programs -> Accessories -> Command Prompt
That runs cmd.exe. You should see a black screen with white text on it, saying
something like this:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\>

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. I will cover NetBIOS
commands in the next article to XP Hacking.

The queen of hacker commands is telnet. To get Windows help for telnet, in the
cmd.exe window give the command:

C:\>telnet /?

Here's what you will get:

telnet [-a][-e escape char][-f log file][-l user][-t term][host
[port]]

-a Attempt automatic logon. Same as --l option except uses the currently logged
on user's name.
-e Escape character to enter telnet cclient prompt.
-f File name for client side logging
-l Specifies the user name to log in with on the remote system. Requires that
the remote system support the TELNET ENVIRON option.
-t Specifies terminal type. Supportedd term types are vt100, vt52, ansi and vtnt
only.
host Specifies the hostname or IP address of the remote computer to connect to.
port Specifies a port number or service name.

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