ZyXEL Communications G.SHDSL.bis 4-port Security Gateway P-793H - Manual (Page 113)

P-793H User’s Guide
Chapter 7 Network Address Translation (NAT) Screens 113
7.5 Configuring Port Forwarding
Note: The Port Forwarding screen is available when you select SUA Only in the
NAT > General screen or when you edit a server mapping set with Full
Feature NAT.
If you do not assign a Default Server IP address, the ZyXEL Device discards
all packets received for ports that are not specified here or in the remote
management setup.
Click Network > NAT > Port Forwarding to open the following screen.
See Appendix E on page 389 for port numbers commonly used for particular services.
Figure 44 NAT > Port Forwarding
The following table describes the fields in this screen.
Table 31 NAT > Port Forwarding
LABEL DESCRIPTION
Default Server
Setup
Default Server In addition to the servers for specified services, NAT supports a default server. A
default server receives packets from ports that are not specified in this screen. If
you do not assign a Default Server IP address, the ZyXEL Device discards all
packets received for ports that are not specified here or in the remote management
setup.
Port Forwarding
Service Name Select a service from the drop-down list box.
Server IP Address Enter the IP address of the server for the specified service.
Add Click this button to add a rule to the table below.
# This is the rule index number (read-only).
Active Click this check box to enable the rule.
Service Name This is a service’s name.
Start Port This is the first port number that identifies a service.
End Port This is the last port number that identifies a service.