Turn On The Alg; Create The Address Objects - ZyXEL Communications ZYWALL USG 20 Manual

7.11.1 Turn On the ALG

Click Configuration > Network > ALG. Select Enable SIP ALG and Enable
SIP Transformations and click Apply.
Figure 97 Configuration > Network > ALG

7.11.2 Create the Address Objects

Use Configuration > Object > Address > Add to create the address objects.
Create a host address object named IPPBX-DMZ for the IPPBX's private DMZ IP
1
address of 192.168.3.9.
Figure 98 Creating the Address Object for the IPPBX's Private IP Address
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