Siemens 5881 - Manual (Page 56)

SIEMENS 5881 Broadband Internet Router
User’s Guide Chapter 6 Security Setup
NAT
SIEMENS 50
Configure the NAT Server
To configure NAT for inbound traffic:
1. Click NAT Server on the left navigation pane. This displays the NAT Server Settings page.
2. Select the interface you want to configure from the Source Interface drop-down menu.
3. Do one of the following:
• Select the network service you are configuring from the Service drop-down menu for Easy Setup. This
configures NAT to support the most common network services.
• For Advanced Setup, select a protocol from the Protocol drop-down menu and specify a First Port # to
assign a port number for the protocol to use. To assign a range of port numbers, specify a Last Port #
as well.
4. Enter the IP address of the local machine in IP Address.
5. Do one of the following to enter port Information for the selected service:
• Click Add next to Default Port # to use the default port for the specified service.
• Enter the port number on the local machine you want the specified service to use in Port #, and click
Add. Leave this field blank if you want the local machine to use the same port number as the WAN.