ZyXEL P-663HN-51 User Guide - Page 90
DMZ Host
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Chapter 7 Network Address Translation (NAT) Screens The following table describes the labels in this screen. Table 26 Advanced Setup > NAT > Port Triggering > Add LABEL DESCRIPTION Application Either select a pre-defined application or select Custom Application and Name enter a name manually. Save/Apply When using a pre-defined service, if you do not want to modify the port numbers, you can click this button to save the changes and have the ZyXEL Device start using them. Trigger The trigger port is a protocol and port (or a range of ports) that causes (or triggers) the ZyXEL Device to record the IP address of the LAN computer that sent the traffic to a server on the WAN. Trigger Port Start Type a port number or the starting port number in a range of port numbers. Trigger Type a port number or the ending port number in a range of port numbers. Port End Trigger Select the protocol. Protocol Open Open 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. Open Start Port Type a port number or the starting port number in a range of port numbers. Open Type a port number or the ending port number in a range of port numbers. End Port Open Select the protocol. Protocol Save/Apply Click this button to save the changes and have the ZyXEL Device start using them. 7.6 DMZ Host In addition to the virtual servers for specified services, NAT supports a DMZ host IP address. The DMZ host receives packets from ports that are not specified in the applications in the virtual server configuration. Note: If you do not assign a DMZ host IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup. 90 P-663HN-51 User's Guide