ZyXEL Communications NBG4604 - Page 126

Chapter 11 Network Address Translation (NAT)
NBG4604 User’s Guide
126
Refer to Appendix E on page 261 for port numbers commonly used for particular
services.
Figure 72 Network > NAT > Application
The following table describes the labels in this screen.
Table 47 Network > NAT > Application
LABEL DESCRIPTION
Add Application Rule
Active Select the check box to enable this rule and the requested service can
be forwarded to the host with a specified internal IP address.
Clear the checkbox to disallow forwarding of these ports to an inside
server without having to delete the entry.
Service Name Type a name (of up to 31 printable characters) to identify this rule in
the first field next to Service Name. Otherwise, select a predefined
service in the second field next to Service Name. The predefined
service name and port number(s) will display in the Service Name and
Port fields.
Local Port
Range
Public Port
Range
Enter the port number ranges to be forwarded.
Server IP
Address
Type the inside IP address of the server that receives packets from the
port(s) specified in the Port field.
Apply Click Apply to save your changes to the Application Rules Summary
table.
Reset Click Reset to not save and return your new changes in the Service
Name and Port fields to the previous one.