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The WAN Setup page displays.
5.
Select a NAT Filtering radio button:
•
Secured. Provides a secured firewall to protect the computers on the LAN from attacks from the
Internet but might prevent some Internet games, point-to-point applications, or multimedia applications
from functioning. By default, the Secured radio button is selected.
•
Open. Provides a much less secured firewall but allows almost all Internet applications to function.
6.
Click the Apply button.
Your settings are saved.
Manage the SIP Application-Level Gateway
The application-level gateway (ALG) for the Session Initiation Protocol (SIP) is enabled by default for
enhanced address and port translation. However, some types of VoIP and video traffic might not work well
when the SIP ALG is enabled. For this reason, the modem provides the option to disable the SIP ALG.
To change the default SIP ALG setting:
1.
Launch a web browser from a computer that is connected to the network.
2.
Enter http://www.routerlogin.net.
A login window opens.
3.
Enter the modem user name and password.
The user name is admin. The default password is password. The user name and password are
case-sensitive.
The BASIC Home page displays.
4.
Select ADVANCED > Setup > WAN Setup.
The WAN Setup page displays.
5.
To disable the SIP ALG, select the Disable SIP ALG check box.
The SIP ALG is enabled by default.
6.
Click the Apply button.
Your settings are saved.
Manage IGMP Proxying
IGMP proxying allows a computer on the local area network (LAN) to receive the multicast traffic it is interested
in from the Internet. If you do not need this feature, leave it disabled, which is the default setting.
To enable IGMP proxying:
1.
Launch a web browser from a computer that is connected to the network.
2.
Enter http://www.routerlogin.net
A login window opens.
Broadband High-Speed DSL Modem Model DM200
Manage the WAN and LAN Network Settings
57
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Troubleshooting
