ZyXEL Communications P-791R V2 Support Notes page 41

Please note that a server can support more than one service, e.g., a server
can provide both FTP and Mail service, while another provides only Web
service.
The following procedures show how to configure a server behind NAT.
Step 1: Login Web Configurator, Advanced Setup, Network -> NAT -> Port
Forwarding.
Step 2: Select the service name from the pull-down menu, and fill in the server
Address on 'Server IP Address', then click button 'Add' to save it.
Step 3: You could click the button 'Edit' on the rule to modify the Service name,
Server IP Address, Start/End Port.
The most often used port numbers are shown in the following table. Please
refer RFC 1700 for further information about port numbers.
Service
FTP
Telnet
SMTP
DNS (Domain Name Server)
www-http (Web)
PPTP (Point-to-Point Tunneling
Protocol)
Example:
•
Internet Access Only
•
Internet Access with an Internal Server
•
Using Multiple Global IP addresses for clients and servers
•
Support Non NAT Friendly Applications
All contents copyright © 2007 ZyXEL Communications Corporation.
P-791R v2 Support Notes
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