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The big picture, Chapter 3 the big picture – ZyXEL Communications Internet Security Gateway 10~100 Series User Manual

Page 33

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ZyWALL 10~100 Series Internet Security Gateway

The Big Picture

3-1

Chapter 3

The Big Picture

The following figure gives an overview of how filtering, the firewall, VPN and NAT are related.

Diagram 3-1 Big Picture— Filtering, Firewall, VPN and NAT