ZyXEL Communications P-870H-53A v2 User Manual 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
Modify
122
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.
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.
P-870H/HW Series User's Guide