How to Use Netcat
Oh, here's one last goodie for advanced users. Get netcat
for Windows. It's a free program written by Weld Pond and Hobbit,
and available from many sites, for example
http://www.atstake.com/research/tools/#network_utilities
. It is basically telnet on steroids. For example, using netcat,
you can set up a port -- also known as a back door, depending
on your motivation -- that will allow people to telnet into a
DOS shell. Use this command:
C:\>nc -L -p 5000 -t -e cmd.exe
You can specify a different port number than 5000. Just make
sure it doesn't conflict with another port by checking with the
netstat
command. Then you and your friends, enemies and random losers
can either telnet in or netcat in with the command:
C:\>nc -v [ipaddress of target] [port]
Of course you will probably get hacked for setting up this
port. However, if you set up a sniffer to keep track of the action,
you can turn this scary back door into a fascinating honeypot.
For example, you could run it on port 23 and watch all the hackers
who attack with telnet hoping to log in. With some programming
you could even fake a unix-like login sequence and play some
tricks on your attackers.
For more on how to hack with telnet, see the Beginners Guide
#8 at http://www.happyhacker.org/gtmhh/begin11.shtml
______________________________________________________
Where are those back issues of GTMHHs and Happy Hacker Digests?
Check out the official Happy Hacker Web page at http://www.happyhacker.org.
We are against computer crime. We support good, old-fashioned
hacking of the kind that led to the creation of the Internet
and a new era of freedom of information. But we hate computer
crime. So don't email us about any crimes you may have committed!
© 2002 Carolyn Meinel. You may forward, print out
or post this GUIDE TO (mostly) HARMLESS HACKING on your Web site
as long as you leave this notice at the end.
