ZyXEL Communications AMG1001-T Series, User Manual

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Chapter 10 Network Address Translation (NAT)
AMG1001-T/AMG1011-T Series User’s Guide
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Port Forwarding
A port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP,
that you can make visible to the outside world even though NAT makes your whole inside network
appear as a single computer to the outside world.
Single IP Versus NAT
Single IP is a ZyNOS implementation of a subset of NAT that supports two types of mapping,
Many-
to-One and Server . The AMG1001-T/AMG1011-T also supports multiple IPs to map multiple public
IP addresses to multiple private LAN IP addresses of clients or servers using mapping types.
• Choose Single IP if you have just one public WAN IP address for your AMG1001-T/AMG1011-T.
• Choose Multiple IPs if you have multiple public WAN IP addresses for your AMG1001-T/
AMG1011-T.
Finding Out More
See Section 10.6 on page 71 for advanced technical information on NAT.
10.2 The NAT Screen
Use this screen to configure NAT for each PVC. Click
Advanced Setup > NAT
to open the following
screen.
Figure 34
Advanced Setup > NAT
The following table describes the labels in this screen.
Table 21
Network > NAT > General
LABEL DESCRIPTION
Virtual Circuit Select the PVC you want to configure from the drop-down list box.
NAT Status This field shows whether NAT is enabled. See Section 7.2 on page 41 for more details on
activating NAT.
Number of IPs Select Single if you have just one public WAN IP address for your AMG1001-T/AMG1011-
T.
Select Multiple if you have multiple public WAN IP addresses for your AMG1001-T/
AMG1011-T.
DMZ Click this to configure the DMZ settings. See Section 10.3 on page 66 for more details.