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Local Area Network (LAN) Configuration with Firewall Illustration.

Network diagram showing a company LAN with three computers connected to a firewall, which separates the private network (green) from the public internet (red).

This diagram illustrates a typical company network setup, featuring a Local Area Network (LAN) protected by a firewall. Ideal for computer science and networking textbooks, it demonstrates the separation of a private LAN from the public internet, emphasizing network security principles. This visual is a practical tool for understanding firewall placement and basic network topology.

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Network Graphics / Division of Abramson & Wickham Graphics Inc.
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