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1. Quiz
Q1 What is firewall ?
Q2 How to work Internet?
Q3 How to work
corporation ?

2. Answer
A1 The firewall enables corporate employees to use the Internet.
A2 It enables employees to regularly attend video conferences.
A3 It can enable castomers to buy goods.

3. Inportant words
Intranet
An intranet is a private computer network that uses Internet
technologies to securely share any part of an organization's
information or operational systems with its employees.
firewall
A firewall is a part of a computer system or network that is
designed to block unauthorized access while permitting
authorized communications.

4. Summary
An intranet is a network separated from the Internet
in the company.
It is often that intranet is used for the construction of a
Web mail system and the GroupWare system in the company.
There system can be used these systems by using the
html document of the Web base.
It is necessary to go by way of a firewall when I send an
email outside intranet.