How to Set Up Linux Apache Server

Page 3: IP Address Overview

Each computer connected with the Internet is known as a host. Each host has a unique address known as IP address.

There are basically three types of networks:

1. Class A Network:
   The first number in a Class A network is between 1 and 126.
   
   For example, a Class A network start with 98 and the available IP address range from:
   
   98.0.0.1
   98.0.0.2
   98.0.0.3
   ..............
   .............
   98.255.255.252
   98.255.255.253
   98.255.255.254
   
2. Class B Network:
   The first number in a Class B network is between 128 and 191. The second number can be anything between 0 and 255.
   
   For example, a Class B network start with 145.255 and the available IP address range from:
   
   145.255.0.1
   145.255.0.2
   145.255.0.3
   ..............
   .............
   145.255.255.252
   145.255.255.253
   145.255.255.254
   
3. Class C Network:
   The first number in a Class C network is between 192 and 223. The second and third number can be anything between 0 and 255.
   
   For example, a Class C network start with 212.230.0 and the available IP address range from:
   
   212.230.0.1
   212.230.0.2
   212.230.0.3
   ..............
   .............
   212.230.255.252
   212.230.255.253
   212.230.255.254
   

Note:

• The first address of each network class are reserved as the Network Address. For example:
  
  98.0.0.0
  145.255.0.0
  212.230.0.0
• The last address of each network class are reserved as the Broadcast Address. For example:
  
  98.255.255.255
  145.255.255.255
  212.230.255.255