Cisco DDR2200 Series, Installation And Operation Manual

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Chapter 7 Advanced Configuration
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4 From the Virtual Servers Setup screen, click Add . The NAT -- Virtual Servers
screen opens.
5 Under Server Name, choose one of the following:

Click Select a Service , and choose a service from the drop-down list.
OR

Click Custom Server , and enter a server name and the Server IP Address.
6 In the Server IP Address field, enter the IP address for the server.
7 In the External Port Start/End fields, assign the external (Internet) port range of
numbers that are associated with the service. These are the ports which will be
used for receiving the service request from the WAN. If you have chosen to
Select a Service from the above selection, the ports will be entered automatically
for you.
8 Under Protocol, select TCP, UDP, or TCP/UDP.
9 In the Internet Port Start/End fields, assign the internal (LAN) port range of
numbers that are associated with the service. These are the ports which the
actual LAN server defines. If you have chosen to Select a Service from the above
selection, the ports will be entered automatically for you.