How Firewall Rules Work

How does firewall protects a network?  A firewall is a piece of software or hardware that helps screen out hackers, viruses, and worms that try to reach your computer over the Internet. If you are a home user or small-business user, using a firewall is the most effective and important first step you can take to help protect your computer. Different Types of Firewalls Different firewalls use different techniques. Most firewalls use two or more of the following techniques: Packet Filters: A packet filter looks at each packet that enters or leaves the network and accepts or rejects the packetRead More →