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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The following table describes the fields in this screen.
Table 42 Network > NAT > Address Mapping
LABEL DESCRIPTION
# This is the rule index number.
Local Start IP This is the starting Inside Local IP Address (ILA). Local IP addresses are
N/A for Server port mapping.
Local End IP 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 N/A for
One-to-one and Server 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
Many-to-One and Server mapping types.
Global End IP This is the ending Inside Global IP Address (IGA). This field is N/A for
One-to-one , Many-to-One and Server mapping types.
Type 1-1 : One-to-one 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.
M-1 : 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.
M-M Ov (Overload): Many-to-Many Overload mode maps multiple local
IP addresses to shared global IP addresses.
MM No (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.
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.