How To Use An Ippbx On The Dmz - ZyXEL Communications ZYWALL USG 20 Manual

Click Configuration > Firewall > Add. Set the From field as WAN and the To
1
field as DMZ. Set the Destination to the HTTP server's DMZ IP address object
(DMZ_HTTP). DMZ_HTTP is the destination because the ZyWALL applies NAT to
traffic before applying the firewall rule. Set the Access field to allow and the
Service to HTTP, and click OK.
Figure 95 Configuration > Firewall > Add

7.11 How to Use an IPPBX on the DMZ

This is an example of making an IPPBX x6004 using SIP in the DMZ zone
accessible from the Internet (the WAN zone). In this example you have public IP
ZyWALL USG 20/20W User's Guide
Chapter 7 Tutorials
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