Siemens CL-110-I - Manual (Page 101)

Chapter 5:Connection Mode
IP Address seen by Internet Users
Please note that, in the above picture, both Internet users are connecting to the same IP address, but
using different protocols.
To Internet users, all virtual servers on your LAN have the same IP Address. This IP Address is
allocated by your ISP. This address should be static, rather than dynamic, to make it easier for
Internet users to connect to your Servers. However, you can use Dynamic DNS feature to allow
users to connect to your virtual servers by using a URL, instead of an IP address.
To set a virtual server, please open the
Virtual Servers item from the Advanced
Setup - NAT menu.
Add New Port Forwarding
To add a new Port Forwarding, please click Add from the Port Forwarding web page.
Pre-defined
Choose one of the services type from the
first drop down list, such as Audio/Video,
Games and so on. In the second drop down
list, choose the name of the application that
you want to use with the type that you select
in the first list.
User defined:
Type a new service name for building a
customized service for specific reason.