Chapter 8 Network Address Translation (NAT)
P-660HN-51 User’s Guide
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8.5 The DMZ 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 50 Network Settings > NAT > DMZ
The following table describes the fields in this screen.
Open Start Port The open port is a port (or a range of ports) that a server on the WAN uses when it
sends out a particular service. The Zyxel Device forwards the traffic with this port (or
range of ports) to the client computer on the LAN that requested the service.
Type a port number or the starting port number in a range of port numbers.
Open End Port Type a port number or the ending port number in a range of port numbers.
Open Protocol Select the transport layer protocol from TCP, UDP, or TCP/UDP.
Apply Click Apply to save your changes.
Cancel Click Cancel to exit this screen without saving.
Table 32 Port Triggering: Configuration Add/Edit (continued)
LABEL DESCRIPTION
Table 33 Network Settings > NAT > DMZ
LABEL DESCRIPTION
Default Server
Address
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 Address, the Zyxel Device
discards all packets received for ports that are not specified in the
NAT Port Forwarding screen.
Apply Click Apply to save your changes.
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