Describe the concept of a packet filter.

Answer these two questions in at least 100 words per topic. No formatting is required. Topic 1: Firewalls As explained in the text, firewalls function as one or more of the following: packet filter, proxy, or stateful inspection. Describe the concept of a packet filter. Discuss how you would create a rule for a packet filter firewall to block a port or a protocol. How would you test the rule? How would you test a stateful firewall’s rules? What tools would you use? Cite your resources. Topic 2: Intrusion Detection Do some research on Intrusion Detection/Prevention Systems (IDS). If you were attempting to protect a Web server, what kind of an IDS would you choose? Explain your reasoning to your classmates. Cite your resources.