SIEMENS SE565 Residential Gateway
User’s Guide
Chapter 5 Configuring Security Features
Address Translation
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Address Translation With NAPT
Many applications require special port access to the Internet in order to function. By enabling Network Address
Port Translation (NAPT), multiple computers in your home network have access to the Internet by translating
port addresses to an Internet IP address while masking their IP addresses from outside users. Only TCP, UDP,
and ICMP protocols support NAPT.
To enable and configure NAPT address translation:
1. Select
Port By-Pass (NAPT)
from the
Address Translation (NAT/NAPT)
page.
2. Click the
Configure
hyperlink next to
Port By-Pass (NAPT)
. This displays the Port-By-Pass Configuration
page.
3. To enable an application for NAPT, click the desired application from the
Available
Applications
list. The
application is moved to the
Enabled
Applications
list.
4. Optionally, click the
Add a custom bypass entry
hyperlink. This displays the advanced features on the
Port By-Pass Configuration page. The advanced option allows you to configure special port access to the
Internet.
