Henric Johnson. 2. Outline. Firewall Design PrinciplesFirewall CharacteristicsTypes of FirewallsFirewall ConfigurationsTrusted SystemsData Access ControlThe Concept of Trusted systemsTrojan Horse Defense. Henric Johnson. 3. Firewalls . Effective means of protecting a local system or network of systems from network-based security threats while affording access to the outside world via a WAN or the Internet.Threat:>While Internet provides benefits to organizations, it exposes the organiza25
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