******************
*                *
*  IP Addresses  *
*       by       *
*   Red Baron    *
*                *
******************

  Some of the info in this tutorial may be used for illegal purposes.  This is intended for
educational purposes ONLY.  I claim no responsibility for your actions.

  I encourage the spreading of this document (and all my other tutorials).  But don't change, 
alter, or edit this in any way without my permission.

  E-mail me at: nonex@hobbiton.org
  My website is: http://www.geocities.com/schitzo_killer_rabbit/


IP Addresses
============

  An IP address is a number, like 227.305.124.3, that is used to identify computers on the
internet.  EVERY computer connected to the internet has an IP address.  Yes, even the computer
that you used to download this tutorial has an IP address.
  See, an IP address is made up of 4 parts:

  ---.---.---.---   
   ^           ^ 
   |           |
network       host

Each "---"=8 bits

Example:

  273.45.6.3   
   ^       ^
   |       |
 network  host

Address Classes:

** n=network h=host **

TYPE    |    Format    |        Range
========|==============|============================
   A    |   n.h.h.h    |     1.0.0.0 - 126.0.0.1
========|==============|============================
   B    |   n.n.h.h    | 128.1.0.0 - 191.254.0.0
========|==============|============================
   C    |   n.n.n.h    | 192.0.1.0 - 223.225.254
========|==============|============================
   D    |   none       | 224.0.0.0 - 239.255.255.255
========|==============|============================

I think that's all of 'em.  If I missed something, let me know at:

nonex@hobbiton.org


Another important thing about IP addresses:

127.0.0.1 is a special IP address.  It is used by all computers to mean itself.  Let me explain:
On your computer, 127.0.0.1 is your computer.  On your friend's computer, 127.0.0.1 is your
friend's computer.  127.0.0.1 is used a lot for setting up proxies and firewalls, so that you
can set them up on your own computer without having to know the actual IP address of your
computer.

If you find someone's IP address, you can use Telnet to connect into someone's computer.  That
is, unless they have a firewall running.  Then, you'd have to get creative if you were really
bent on getting into their computer.  Also, with someone's IP address you can use Ping, Tracert,
and other net tools (see my Net Tools tutorial).



  Hope you learned a lot, stay tuned for my next tutorial.