ZyXEL P-870H-53A v2 User Guide - Page 122

Chapter 8 Network Address Translation (NAT) To change your ZyXEL Device's address mapping settings, click Network > NAT > Address Mapping to open the following screen. Figure 65 Network > NAT > Address Mapping The following table describes the fields in this screen. Table 37 Network > NAT > Address Mapping LABEL Set Local Start IP Local End IP Global Start IP Global End IP Type DESCRIPTION This is the index number of the address mapping set. This is the starting Inside Local IP Address (ILA). This is the end Inside Local IP Address (ILA). If the rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP address. This field is blank for One-to-one mapping types. This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic IP address from your ISP. You can only do this for the Many-to-One mapping type. This is the ending Inside Global IP Address (IGA). This field is blank for One-to-one and Many-to-One mapping types. This is the address mapping type. One-to-One: This mode maps one local IP address to one global IP address. Note that port numbers do not change for the One-to-one NAT mapping type. Many-to-One: This mode maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature that previous ZyXEL routers supported only. Modify Many-to-Many: This mode maps multiple local IP addresses to shared global IP addresses. Click the Edit icon to go to the screen where you can edit the address mapping rule. Click the Remove icon to delete an existing address mapping rule. Note that subsequent address mapping rules move up by one when you take this action. 122 P-870H/HW Series User's Guide