Before You Begin; The Alg Screen - ZyXEL Communications ZyWall 110 User Manual

policy routes to have calls from LAN IP address A go out through WAN IP address
address B go out through WAN IP address 2.
Figure 317 VoIP with Multiple WAN IP Addresses

15.1.2 Before You Begin

You must also configure the security policy and enable NAT in the Zyxel Device to allow sessions initiated
from the WAN.

15.2 The ALG Screen

Click Configuration > Network > ALG to open the ALG screen. Use this screen to turn ALGs off or on,
configure the port numbers to which they apply, and configure SIP ALG time outs.
Note: If the Zyxel Device provides an ALG for a service, you must enable the ALG in order to
use the application patrol on that service's traffic.
Figure 318 Configuration > Network > ALG
Chapter 15 ALG
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and calls from LAN IP
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