ZyXEL Communications VMG1312-B10C, User Manual

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Chapter 10 Network Address Translation (NAT)
VMG1312-B10C User’s Guide
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10.7.1 Add/Edit Address Mapping Rule
To add or edit an address mapping rule, click Add new rule or the rule’s edit icon in the Address
Mapping screen to display the screen shown next.
Figure 84
Address Mapping: Add/Edit
The following table describes the fields in this screen.
Type 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), the Device's Single User Account
feature that previous routers supported only.
Many-to-Many : This mode maps multiple local IP addresses to shared global IP addresses.
Modify/Delete Click the Edit icon to go to the screen where you can edit the address mapping rule.
Click the Delete icon to delete an existing address mapping rule. Note that subsequent
address mapping rules move up by one when you take this action.
Table 61
Network Setting > NAT > Address Mapping (continued)
LABEL DESCRIPTION
Table 62
Address Mapping: Add/Edit
LABEL DESCRIPTION
Type Choose the IP/port mapping type from one of the following.
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), the Device's Single User Account
feature that previous routers supported only.
Many-to-Many : This mode maps multiple local IP addresses to shared global IP addresses.
Local Start IP Enter the starting Inside Local IP Address (ILA).