ZyXEL SBG3300-N000 User Guide - Page 225
IP Address assigned by ISP
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Chapter 11 Network Address Translation (NAT) third (C in the example). You assign the LAN IP addresses and the ISP assigns the WAN IP address. The NAT network appears as a single host on the Internet. Figure 73 Multiple Servers Behind NAT Example A=192.168.1.33 B=192.168.1.34 LAN WAN 192.168.1.1 IP Address assigned by ISP C=192.168.1.3 D=192.168.1.36 Click Network Setting > NAT > Port Forwarding to open the following screen. See Appendix F on page 425 for port numbers commonly used for particular services. Figure 74 Network Setting > NAT > Port Forwarding The following table describes the fields in this screen. Table 53 Network Setting > NAT > Port Forwarding LABEL DESCRIPTION Add new rule Click this to add a new rule. # This is the index number of the entry. Status This field displays whether the NAT rule is active or not. A yellow bulb signifies that this rule is active. A gray bulb signifies that this rule is not active. Service Name This shows the service's name. WAN Interface This shows the WAN interface through which the service is forwarded. WAN IP This field displays the incoming packet's destination IP address. Server IP Address This is the server's IP address. Start Port This is the first external port number that identifies a service. End Port This is the last external port number that identifies a service. Translation Start Port This is the first internal port number that identifies a service. Translation End This is the last internal port number that identifies a service. Port SBG3300-N Series User's Guide 225