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Local Start IP:
This is the starting Inside Local IP Address. Local IP addresses are N/A
for Server port mapping.
Local End IP:
This is the end Inside 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 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 Many to One (i.e., PAT, port address translation).
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.
