ZyXEL P-870MH-C1 User Guide - Page 153
Table 42, Trigger Port
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Chapter 8 Network Address Translation (NAT) Click NAT > Trigger Port to open the following screen. Use this screen to view and configure your Device's trigger port settings. Figure 74 Trigger Port The following table describes the labels in this screen. Table 42 NAT Trigger Port LABEL DESCRIPTION Service Name Select a pre-defined service from the drop-down list box. The predefined service port number(s) and protocol will display in the Trigger port, Open port and Protocol fields. WAN Interface Trigger Port Start End Protocol Open Port Start End Protocol Add No. Active Otherwise, select User Define to open the Rule Setup screen where you can manually enter the port number(s) and select the IP protocol. Select the WAN interface through which the service is forwarded. The trigger port is a port (or a range of ports) that causes (or triggers) the Device to record the IP address of the LAN computer that sent the traffic to a server on the WAN. This is the first port number that identifies a service. This is the last port number that identifies a service. This is the IP protocol. 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 Device forwards the traffic with this port (or range of ports) to the client computer on the LAN that requested the service. This is the first port number that identifies a service. This is the last port number that identifies a service. This is the IP protocol. Click this button to add a rule to the table below. This is the rule index number (read-only). This field indicates whether the rule is active or not. Server Name WAN Interface Clear the check box to disable the rule. Select the check box to enable it. This field displays the name of the service used by the packets for this virtual server. This field displays the WAN interface through which the service is forwarded. P-870HN-5xb User's Guide 153