Firewall is a must have security for every computer that is connected to a network especially the internet. Is a firewall is not installed, the computer is like an open door to the rest of the world. Anyone can come in and do malicious stuff on the system. Windows 7 provides a bare bones firewall that is built into Windows which is good for most of the threats but it is not really a complete firewall and needs a lot of improvement.
There are two major parts in a firewall, inbound firewall
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