The Address Mapping Screen; Add/Edit Address Mapping Rule - ZyXEL Communications VMG8825-B Series User Manual

11.7 The Address Mapping Screen

Ordering your rules is important because the VMG applies the rules in the order that you specify. When a
rule matches the current packet, the VMG takes the corresponding action and the remaining rules are
ignored.
Click Network Setting > NAT > Address Mapping to display the following screen.
Figure 93 Network Setting > NAT > Address Mapping
The following table describes the fields in this screen.
Table 65 Network Setting > NAT > Address Mapping
LABEL
Add new rule
Rule Name
Local Start IP
Local End IP
Global Start IP
Global End IP
Type
Wan Interface
Name
Modify

11.7.1 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.
Chapter 11 Network Address Translation (NAT)
DESCRIPTION
Click this to create a new rule.
This is the name of the rule.
This is the starting Inside Local IP Address (ILA).
This is the ending 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), the VMG'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.
This is the WAN interface to which the address mapping rule applies.
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.
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