ZyXEL P-660R-11V3 Manual de usuario descargar pdf (Pagina 83)

Chapter 10 Network Address Translation (NAT)

P-660R-T1 v3 User’s Guide

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.

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 83 for more

details.

Virtual Server Click this to configure port forwarding rules for your ZyXEL Device. See Section

10.4 on page 84 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 86 for more details.

Table 21 Network > NAT > General (continued)

LABEL DESCRIPTION

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.

DMZ Host IP

Address

Type the IP address for DMZ in dotted decimal notation.

Note: Make sure the IP addresses of the LAN, WAN and DMZ are

on separate subnets.

SAVE Click this to save your settings.

BACK Click this to return to the previous screen without saving.

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ZyXEL P-660R-11V3 Manual de usuario Pagina 83