Chapter 8 Network Address Translation (NAT)
8.5 The DMZ Host Screen
In addition to the servers for specified services, NAT supports a default server IP address. A default server receives packets from ports that are not specified in the NAT Port Forwarding Setup screen.
Figure 86 NAT > DMZ Host
The following table describes the fields in this screen.
Table 54 NAT > DMZ Host
LABEL | DESCRIPTION |
Default Server | Enter the IP address of the default server which receives packets from |
| ports that are not specified in the NAT Port Forwarding screen. |
| Note: If you do not assign a Default Server, the |
| discards all 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 back to the |
8.6 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. The SIP ALG translates the
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