ZyXEL Communications P-660N-T1A, User Manual

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Chapter 9 Network Address Translation (NAT)
P-660N-T1A User’s Guide
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9.4.1 The Address Mapping Rule Edit Screen
Use this screen to edit an address mapping rule. Click the rule’s edit icon in the
Address Mapping screen to display the screen shown next.
Figure 69 Network > NAT > Address Mapping: Edit
The following table describes the fields in this screen.
Table 43 Network > NAT > Address Mapping: Edit
LABEL DESCRIPTION
Type Choose the port mapping type from one of the following.
One-to-One : One-to-One mode maps one local IP address to one global
IP address. Note that port numbers do not change for One-to-one NAT
mapping type.
Many-to-One : Many-to-One 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 Overload : Many-to-Many Overload mode maps multiple
local IP addresses to shared global IP addresses.
Many-to-Many No Overload : Many-to-Many No Overload mode maps
each local IP address to unique global IP addresses.
Server : This type allows you to specify inside servers of different services
behind the NAT to be accessible to the outside world.
Local Start IP This is the starting local IP address (ILA). Local IP addresses are N/A for
Server port mapping.
Local End IP This is the end local IP address (ILA). If your rule is for all local IP
addresses, then enter 0.0.0.0 as the
Local Start IP address and
255.255.255.255 as the Local End IP address.
This field is N/A for One-to-One and Server mapping types.
Global Start
IP This is the starting global IP address (IGA). Enter 0.0.0.0 here if you have
a dynamic IP address from your ISP.