ZyXEL VMG3925-B10B User Guide - Page 155

Chapter 11 Network Address Translation (NAT) Figure 75 Multiple Servers Behind NAT Example A=192.168.1.33 LAN B=192.168.1.34 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 D on page 288 for port numbers commonly used for particular services. Figure 76 Network Setting > NAT > Port Forwarding The following table describes the fields in this screen. Table 55 Network Setting > NAT > Port Forwarding LABEL Add New Rule # Status Service Name WAN Interface WAN IP Server IP Address Start Port End Port Translation Start Port Translation End Port Protocol Modify DESCRIPTION Click this to add a new rule. This is the index number of the entry. 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. This shows the service's name. This shows the WAN interface through which the service is forwarded. This field displays the incoming packet's destination IP address. This is the server's IP address. This is the first external port number that identifies a service. This is the last external port number that identifies a service. This is the first internal port number that identifies a service. This is the last internal port number that identifies a service. This shows the IP protocol supported by this virtual server, whether it is TCP, UDP, or TCP/ UDP. Click the Edit icon to edit this rule. Click the Delete icon to delete an existing rule. VMG3925-B10B User's Guide 155