ZyXEL Communications ZyWALL USG 100 Series - Before You Begin; The ALG Screen

Chapter 21 ALG
ZyWALL USG 100/200 Series User’s Guide
435
• See Section 21.3 on page 437 for ALG background/technical information.
21.1.3 Before You Begin
You must also configure the firewall and enable NAT in the ZyWALL to allow
sessions initiated from the WAN.
21.2 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 ZyWALL provides an ALG for a service, you must enable the ALG in order
to use the application patrol on that service’s traffic.
Figure 328 Configuration > Network > ALG