Hi Friends,
Is anyone help me to aware about different types of the firewall?
The only thing which I know about firewall is that, firewall is used to restrict the particular web-site
Please let me know in detail about the different type of the firewalls.

Thanks for any help.

Nope, a "firewall" is NOT "used to restrict the particular web-site "

A firewall is a protective barrier between two areas.

However; in computer terms it is a control interface that can limit the exposure of the protected area by only allowing data traffic through certain "holes" (ports) and blocking the rest.

Well the best firewall which i have seen is the "Netlimitter" It gives you so much control that you can control the bandwidth used by each application.Even torrents.You can find out about people connected in virtual network.

These are different type of firewall:

1. XP-SP2
2. Comodo
3. zonealarm
4. sygate
5. sunbelt
6.Truecrypt

thanks

Those are different programs, not different type of firewalls...

There are 3 different types of firewall that exists at the moment:
1) packet filtering firewalls
2) application layer filtering firewalls
3) stateful firewalls

This subject being way too complicated to be extended here.
Look there:
http://en.wikipedia.org/wiki/Firewall
and there:
http://en.wikipedia.org/wiki/Application_layer_firewall
and there:
http://en.wikipedia.org/wiki/Stateful_firewall

for more informations.

Firewall are of two types

1) hardware firewall

hardware firewall are basically routers and other internet devices

2) software firewall

software firewall are basically programs like zonealarm, comodo, windows xp - firewall

Packet filter: looks at sent & received data and based on user settings it accepts or rejects these request

Application gateway: restricts servers only within networks

Circuit level gateway: sets restrictions on TCP or UDP (TCP -websites such as e-mail transfer, UDP - datagrams)

Proxy Server: in between server that acts as a go-between of incoming and outgoing requests.