ZyXEL Communications SBG3500-N000 - The Default Server Screen

Chapter 11 Network Address Translation (NAT)
SBG3500-N Series User’s Guide
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11.5 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.
Figure 91 Network Setting > NAT > Default Server
The following table describes the fields in this screen.
Open Start Port The open port is a port (or a range of ports) that a server on the WAN uses when it sends
out a particular service. The SBG3500-N Series forwards the traffic with this port (or range
of ports) to the client computer on the LAN that requested the service.
Type a port number or the starting port number in a range of port numbers.
Open End Port Type a port number or the ending port number in a range of port numbers.
Open Protocol Select the transport layer protocol from TCP, UDP, or TCP/UDP.
OK Click OK to save your changes.
Cancel Click Cancel to exit this screen without saving.
Table 58 Port Triggering: Configuration Add/Edit (continued)
LABEL DESCRIPTION
Table 59 Network Setting > NAT > Default Server
LABEL DESCRIPTION
Group Name Select the name of an interface group that was created in the Network Setting >
Interface Group screen. The DMZ host must be in the same subnet as the selected
interface group.
Default Server
Address
Enter the IP address of the default server which receives packets from ports that are not
specified in the NAT Port Forwarding screen.
Note: If you do not assign a Default Server Address, the SBG3500-N Series discards all
packets received for ports that are not specified in the NAT Port Forwarding screen.
Apply Click Apply to save your changes.
Cancel Click Cancel to restore your previously saved settings.