Chapter 10 Network Address Translation (NAT)
VMG8924-B10A and VMG8924-B30A Series User’s Guide
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10.8 The Address Mapping Screen
Ordering your rules is important because the Device applies the rules in the order that you specify.
When a rule matches the current packet, the Device 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.
Global End IP Enter the ending Inside Global IP Address (IGA). This field is blank for One-to-One and
Many-to-One mapping types.
Set Select the number of the mapping set for which you want to configure.
OK Click OK to save your changes.
Cancel Click Cancel to exit this screen without saving.
Table 65 Address Mapping: Add/Edit (continued)
LABEL DESCRIPTION
Table 66 Network Setting > NAT > Address Mapping
LABEL DESCRIPTION
Add new rule Click this to create a new rule.
Set This is the index number of the address mapping set.
Local Start IP This is the starting Inside Local IP Address (ILA).
Local End IP 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.
Global Start IP 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.
Global End IP This is the ending Inside Global IP Address (IGA). This field is blank for One-to-One and
Many-to-One mapping types.
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 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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