Firewall technologies

In this chapter, students will be able to understand: Password policies ensure that users choose effective passwords; user-level security requires a separate account for each user; in share-level security, all users access shares by using the same passwords; a firewall is a hardware or software product that protects a network from unauthorized access, using techniques such as packet filtering, NAT, or proxy servers;...

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This section focuses on the technologies used in various firewalls and how they work. The firewall taxonomy in Figure 2-1 shows the general types of firewalls.

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