Firewalls

   0. write 2 paragraphs on Firewalls

                                                   And

• 1 List three design goals for a firewall.
• 2 List four techniques used by firewalls to control access and enforce a security policy.
• 3 What information is used by a typical packet filtering firewall?
• 4 What are some weaknesses of a packet filtering firewall?
• 5 What is the difference between a packet filtering firewall and a stateful inspection firewall?
• 6 What is an application-level gateway?
• 7 What is a circuit-level gateway?
• 8 What are the common characteristics of a bastion host?
• 9 Why is it useful to have host-based firewalls?
• 10 What is a DMZ network and what types of systems would you expect to find on such networks?
• 11 What is the difference between an internal and an external firewall?