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ZyXEL Communications ZyXEL ZyWALL IDP 10 User Manual

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ZyWALL IDP10 User’s Guide

1-6

Introducing the ZyWALL IDP 10

In installation example 4 (see Figure 1-5) ZyWALLs (A1 and A3) protect the LAN and DMZ from
intrusions from the Internet and from each other. ZyWALLs (A1 and A3) also receive firewall
protection.

ZyWALL (A2) protects the firewall (B), DMZ servers (and LAN). However, ZyWALL (A2) does not
receive firewall protection.

Figure 1-5 Installation Example 4