One of the first lines of security defense that companies (and individuals) should perform is to enable a firewall. Today, most routers include a firewall, most personal-computer operating systems provide a firewall, and there are a variety of network (hardware and software) firewalls available. For this discussion:

Define the term firewall

Discuss the goal(s) of a firewall

Describe different types of firewalls (router, server, personal computer, network) and when users should use each

List several commonly available (open source) firewalls

Describe best practices for using a firewall

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