Chapter 11 Network Address Translation (NAT)
11.4 The DMZ Screen
If you need to allow packets from a specific WAN connection to your local network, NAT supports a default server IP address. A default server receives packets from the specified WAN connection and the ports that are not specified in the NAT Port Forwarding Setup screen.
Figure 73 Network Setting > NAT > DMZ
The following table describes the fields in this screen.
Table 54 Network Setting > NAT > DMZ
LABEL | DESCRIPTION |
WAN Interface | Select a WAN PVC connection (PVC0~PVC7) from which you want to forward the traffic |
| to the specified default server. |
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Default Server | Enter the IP address of the default server which receives packets from ports that are not |
Address | specified in the NAT > Port Forwarding screen. |
| Note: If you do not assign a Default Server Address, the |
| packets received for ports that are not specified in the NAT Port Forwarding |
| screen. |
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Apply | Click Apply to save your changes. |
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Cancel | Click Cancel to restore your previously saved settings. |
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11.5 The ALG Screen
Some NAT routers may include a SIP Application Layer Gateway (ALG). A SIP ALG allows SIP calls to pass through NAT by examining and translating IP addresses embedded in the data stream. When the
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