The Default Server Screen - ZyXEL Communications SBG5500 Series User Manual

The following table describes the fields in this screen.
Table 49 Address Mapping: Add/Edit
LABEL
Type
WAN Interface
Internal
Beginning IP
Address
Ending IP
Address
External
Beginning IP
Address
Ending IP
Address
OK
Cancel

8.5 The Default Server Screen

In addition to the servers for specified services, NAT supports a default server IP address. A default server
receives packets from ports that are not specified in the NAT Port Forwarding Setup screen. Click
Configuration > NAT > Default Server to open the following screen.
Figure 103 Configuration > NAT > Default Server
Chapter 8 Network Address Translation (NAT)
DESCRIPTION
Choose the IP/port mapping type from one of the following.
One-to-One: This mode maps one internal IP address to one external IP address. Note that port
numbers do not change for the One-to-one NAT mapping type.
Many-to-One / Source NAT: This mode maps multiple internal IP addresses to one external IP
address. This is equivalent to SUA (that is, PAT, port address translation), the SBG's Single User
Account feature that previous routers supported only.
Many-to-Many: This mode maps multiple internal IP addresses to shared external IP addresses.
Select the WAN interface through which the service is forwarded.
Enter the starting Inside Local IP Address (ILA).
Enter the ending Inside Local IP Address (ILA). This field is blank for One-to-One mapping types.
Enter 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 / Source NAT mapping type.
Enter the ending Inside Global IP Address (IGA). This field is blank for One-to-One and Many-to-
One mapping types.
Click OK to save your changes.
Click Cancel to exit this screen without saving.
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