Port Forwarding; Figure 204 Advanced > Nat > Address Mapping > Edit; Table 95 Advanced > Nat > Address Mapping > Edit - ZyXEL Communications ZYWALL 2 PLUS User Manual

Figure 204 ADVANCED > NAT > Address Mapping > Edit
The following table describes the labels in this screen.
Table 95 ADVANCED > NAT > Address Mapping > Edit
LABEL
Type
Local Start IP
Local End IP
Global Start IP
Global End IP
Apply
Cancel

17.5 Port Forwarding

A port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or
FTP, that you can make visible to the outside world even though NAT makes your whole
inside network appear as a single computer to the outside world.
ZyWALL 2 Plus User's Guide
DESCRIPTION
Choose the port mapping type from one of the following.
1. 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.
2. 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.
3. Many-to-Many Overload: Many-to-Many Overload mode maps multiple local
IP addresses to shared global IP addresses.
4. Many One-to-One: Many One-to-One mode maps each local IP address to
unique global IP addresses.
5. Server: This type allows you to specify inside servers of different services
behind the NAT to be accessible to the outside world.
This is the starting Inside Local IP Address (ILA). Local IP addresses are N/A for
Server port mapping.
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.
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.
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.
Click Apply to save your changes back to the ZyWALL.
Click Cancel to exit this screen without saving.
Chapter 17 Network Address Translation (NAT)
317