The need for a Firewall
Today most organizations are
characterized with internal computer networks, and they use this facility
mostly to store and exchange information that is private to them Meantime,
there are situation is which, need arise to have communication between outside world
and the local network. Most organizations prefer if they have a control for the
latter type of communication, because unauthorized users would use this
advantage to steal valuable information or to penetrate the control of the
systems. The solution come up with firewalls, where a firewall is a security system
intended to protect an organizations network against external threats, such as
hackers, coming from another network, such as the Internet. The most important
question one would seek answer to are.
·
How a firewall looks like and what is the type
of firewall?
·
How a firewall works and defends attacks?