Siemens SpeedStream 5450 - Manual (Page 63)

5450 Four-Port Router User’s Guide Configuring Advanced Features
Address Translation
The Address Translation feature provides different methods of keeping individual users/computers hidden
behind a single outward-facing address, while still allowing them to access the Internet and related
applications. If you have more than one available Internet connection interface, they will all be displayed
in the drop-down menu for ease of selection.
To enable and configure the address translation feature:
1. From the “ Security Options ” window, select the Address Translation button. This displays the
“Address Translation (NAT/NAPT)” window.
2. Select an interface from the Select Interface drop-down menu.
3. Select one of the following options:
• Use no address translation
Disables address translation.
• Address Translation (NAT)
Uses NAT for address translation. NAT is an Internet standard that allows a LAN to use one set of
IP addresses for internal traffic and a second set for external traffic. This displays the “
NAT
Address Configuration ” window.
• Port By-Pass (NAPT)
Uses NAPT for address translation. Only TCP, UDP, and ICMP protocols support NAPT. NAPT
allows many devices connected to the router access to the Internet while masking the
identification of the internal IP addresses. This displays the “
Port By-Bass Configuration ” window.
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