Before You Begin; The Alg Screen - ZyXEL Communications 310 User Manual

Chapter 15 ALG
Figure 138 VoIP with Multiple WAN IP Addresses
• See Section 15.3 on page 238

15.1.3 Before You Begin

You must also configure the firewall and enable NAT in the ZyWALL 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.
Figure 139 Configuration > Network > ALG
236
for ALG background/technical information.
ZyWALL 110/310/1100 Series User's Guide