1. How Corporate Firewalls Work
● Firewall Work
● Firewall
● Firewall reduce
● How Firewall works

2. Firewalls Work
● If you have been using the
Internet for any length of
time, and especially if you
work at a larger company
and browse the Web while
you are at work, you have
probably heard the term
firewall used. For example,
you often hear people in
companies say things like,
"I can't use that site
because they won't let it
through the firewall."

3. Firewall
● A firewall is a part
of a computer
system or network
that is designed to
block unauthorized
access while
permitting
authorized
communications.

4. Firewall reduce
● Our firewall reduces the
contact our applications and
information have with threats
over the Internet. Our firewall
looks at all incoming signals,
such as e-mail or HTTP
requests, for damaging
commands. Only non-
damaging signals are sent to
the servers. This makes it
harder for viruses and
hackers to attack the E-
government system.

5. How Firewall works
● Firewall auch Netzwerk-, oder
Hardware-Firewall genannt, ist
eine Netzwerk-
Sicherheitskomponente in der
Computertechnik, die
Netzwerkverkehr anhand eines
definierten Firewall-Regelwerks
erlaubt oder verbietet. Das Ziel
einer Firewall ist, den
Datenverkehr zwischen
Netzwerksegmenten mit
verschiedenen Vertrauens-Stufen
abzusichern. Ein typischer
Einsatzzweck ist es, den Übergang
zwischen einem lokalen Netzwerk
(LAN) (hohes Vertrauen) und dem
Internet (kein Vertrauen) zu
kontrollieren.

6. References
● How Firewalls Work
● http://en.wikipedia.org/wiki/Firewall
● Firewall reduce
● http://www.microsoft.com/windowsxp/using/sec
urity/internet/sp2_wfintro.mspx