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Software vs Hardware Firewalls, Port Security and Additional Features This lesson discusses set up and configuration for a basic firewall. When setting up a firewall, it is important to know the difference between a hardware and a software firewall. A software firewall is installed on clients and inexpensive but also vulnerable. A hardware firewall is an actual physical device. It is more robust, configurable but also have a high cost. It is important to use a combination of hardware and software to get the best protection. This lesson also covers port security, which increases security via modifying traffic and access based on ports. Creating a firewall also offers additional security as they can monitor traffic for any malware.