ZyXEL Communications P-660RU-T1 v3, User Manual, Page: 89 / 230

Chapter 10 Network Address Translation (NAT)
P-660RU-Tx v3 User’s Guide
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The following table describes the labels in this screen.
10.3 The DMZ Screen
The DeMilitarized Zone (DMZ) provides a way for public servers (Web, e-mail, FTP, etc.) to
be visible to the outside world (while still being protected from DoS (Denial of Service)
attacks such as SYN flooding and Ping of Death). These public servers can also still be
accessed from the secure LAN.
By default the firewall allows traffic between the WAN and the DMZ, traffic from the DMZ to
the LAN is denied, and traffic from the LAN to the DMZ is allowed. Internet users can have
access to host servers on the DMZ but no access to the LAN, unless special filter rules
allowing access were configured by the administrator or the user is an authorized remote user.
Use this screen to configure a separate independent network from the LAN in which you can
put your servers. Click
Advanced Setup > NAT > DMZ to open the following screen.
Figure 35 Advanced Setup > NAT > DMZ
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 61 for more
details on activating NAT.
Number of IPs Select Single if you have just one public WAN IP address for your ZyXEL Device.
Select Multiple if you have multiple public WAN IP addresses for your ZyXEL
Device.
DMZ Click this to configure the DMZ settings. See Section 10.3 on page 89 for more
details.
Virtual Server Click this to configure port forwarding rules for your ZyXEL Device. See Section
10.4 on page 90 for more details.
IP Address
Mapping
This is available only when you select Multiple in the Number of IPs field. Click
this to configure address mapping rules for your ZyXEL Device. See Section 10.5
on page 93 for more details.
Table 22 Advanced Setup > NAT > DMZ
LABEL DESCRIPTION
DMZ setting for This field displays the PVC you want to configure.
DMZ Use this field to enable or disable DMZ.