ZyXEL Communications NBG410W3G User Manual
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Chapter 4 Tutorials
NBG410W3G Series User’s Guide
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6 Type the IP address of your VoIP phone in the Server IP Address field. In this example
192.168.1.33 is used.
7 Click Apply.
Figure 31 H.323 Tutorial: ADVANCED > NAT > Port Forwarding
Set up a Firewall Rule
1 Click SECURITY > Firewall > Rule Summary to display the Rule Summary screen
and to configure firewall rules on traffic between the VoIP phone and the WAN. In this
example, traffic between the file server and WAN1 is restricted to H.323 traffic.
2 The Rule Summary screen appears. Select DMZ and WAN1 from the drop-down list in
the Packet Direction field and click Refresh. Click the Modify ( ) icon to add a new
rule.
Figure 32 H.323 Tutorial: SECURITY > Firewall > Rule Summary
3 The Firewall - Edit screen appears. Type the name of the firewall rule in the Rule Name
field. In this example LAN2WAN1 - H.323 is used.
4 In the Edit Source Address section select Single Address in the drop-down box in the
Address Type field. Type the source address of H.323 traffic in the Start IP Address