ZyXEL Communications 91-009-073003B 7.9.1 Turn On the ALG, 7.9.2 Set Up a NAT Policy For H.323

Chapter 7 Tutorials

for wan1 IP address 10.0.0.8 to a H.323 device located on the LAN and using IP address 192.168.1.56.

Figure 95 WAN to LAN H.323 Peer-to-peer Calls Example

192.168.1.56 10.0.0.8

7.9.1 Turn On the ALG

Click Configuration > Network > ALG. Select Enable H.323 ALG and Enable H.323 transformations and click Apply.

Figure 96 Configuration > Network > ALG

7.9.2 Set Up a NAT Policy For H.323

In this example, you need a NAT policy to forward H.323 (TCP port 1720) traffic received on the ZyWALL’s 10.0.0.8 WAN IP address to LAN1 IP address 192.168.1.56.

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	ZyWALL USG 50 User’s Guide