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12.1 list three design goals for a firewall.
12.2 list four techniques used by firewalls to control access and enforce a security policy.
12.3 what information is used by a typical packet filtering firewall?
12.4 what are some weaknesses of a packet filtering firewall?
12.5 what is the difference between a packet filtering firewall and a stateful inspection firewall?
12.6 what is an application-level gateway?
12.7 what is a circuit-level gateway?
12.9 what are the common characteristics of a bastion host?
12.10 why is it useful to have host-based firewalls?
12.11 what is a dmz network and what types of systems would you expect to find on such networks?
12.12 what is the difference between an internal and an external firewall?

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12.1 list three design goals for a firewall.
12.2 list four techniques used by firewalls to c...

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