Appendix A The Big Picture - ZyXEL Communications ZyXEL ZyWALL 50 User Manual

ZyWALL 50 Internet Security Gateway
Appendix A
The Big Picture
The following figure gives an overview of how filtering, the firewall, VPN and NAT are related.
Diagram 1 Big Picture — Filtering, Firewall, NAT and VPN
The Big Picture A