Operation Manual

Chapter 10 Network Address Translation (NAT)
SBG3300-N Series User’s Guide
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10.5 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 83 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 Device 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 59 Port Triggering: Configuration Add/Edit (continued)
LABEL DESCRIPTION
Table 60 Network Setting > NAT > Default Server
LABEL DESCRIPTION
Interface Group
Name
Select the name of an interface group that was created in the Network Setting >
Interface Group screen. The host must be in the same VLAN as the selected Interface
Group/VLAN.
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 Device 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.