Abstract:
When two or more computers are interconnected and able to exchange data or information then
we call network. We need some special PC’s are called Server to exchange data or information
from one to another. There is a various types of server For Example-Web server, DNS server,
Proxy server, Mail server, Firewall, FTP server. It is not possible to maintain a network because
each of them works differently. If network is connected to the internet and we want to secure our
information we must need to know about Network system. Thats why I choose this subject of my
report.