ZyXEL Communications 1000 User Manual
Chapter 7 Tutorials
ZyWALL USG 1000 User’s Guide
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Click Configuration > Firewall > Add. Set the From field as WAN and the To
field as DMZ. Set the Destination to the IPPBX’s DMZ IP address object
(DMZ_SIP). IPPBX_DMZ is the destination because the ZyWALL applies NAT to
traffic before applying the firewall rule. Set the Access field to allow and click
OK.
field as DMZ. Set the Destination to the IPPBX’s DMZ IP address object
(DMZ_SIP). IPPBX_DMZ is the destination because the ZyWALL applies NAT to
traffic before applying the firewall rule. Set the Access field to allow and click
OK.
Figure 123 Configuration > Firewall > Add
7.12.5 Set Up a DMZ to LAN Firewall Rule for SIP
The firewall blocks traffic from the DMZ zone to the LAN zone by default so you
need to create a firewall rule to allow the IPPBX to send SIP traffic to the SIP
clients on the LAN.
need to create a firewall rule to allow the IPPBX to send SIP traffic to the SIP
clients on the LAN.