(1) A popular computer network publication stated at one time that the enterprise firewall was dead. It boldly stated that the exterior firewalls of the organization should be torn down and replaced with host-based firewalls instead. Is this insane, or is it the best new practice in security management? Explain your answer. (2) What is a host-based firewall and how does it provide protection? (3) What is a enterprise, or network, firewall and how does it provide protection?

(4) What does f5 (see http://www.f5.com/ ) offer related to this week's questions?