Firewall presentation

2. Content:
 Define what is firewall ?
 Why Need of firewall?
 Types of firewall
 Types of firewall techniques

3.  What is Firewall?
Firewall is device that provides secure connectivity between
networks(internal/external)

4.  Why Need Firewall?
• To protect confidential
information from those who do
not explicitly need to access it.
• To protect our network & its
resources from malicious users
& accidents that originate
outside of our network.

5.  Types Of Firewall
Hardware firewall
Software firewall

6.  Hardware Firewall
• It is a physical device.
• It can be installed between the
modem and computer.
• Protect an entire network.
• Usually more expensive, header
to configure

7.  Software Firewall
• It is a software application.
• Protect a single computer.
• This is usually the computer
with modem attached to it.
• Usually less expensive, easier
to configure

8.  Types Of Firewall Techniques
 Packet filter
 Application gateway/proxy server/proxy
application gateway Circuit-level gateway
Bastion host