Wireless-N ADSL2+ Modem Router DGN2000 Reference Manual
Protecting Your Network 3-3
v1.0, July 2008

Changing the Administrator Login Time-out

For security, the administrator’s login to the modem router configuration times out after a period of
inactivity. To change the login time-out period:
1. In the Set Password screen, type a number in the Administrator login times out field. The
suggested default value is 5 minutes.
2. Click Apply to save your changes, or click Cancel to keep the current period.
Configuring Basic Firewall Services
Basic firewall services that you can configure include access blocking and scheduling of firewall
security. These topics are presented in the following sections.

Blocking Keywords, Sites, and Services

The modem router provides a variety of options for blocking Internet-based content and
communications services. With its content filtering feature, the Wireless-N ADSL2+ Modem
Router prevents objectionable content from reaching your PCs. The modem router allows you to
control access to Internet content by screening for keywords within Web addresses. Key content
filtering options include:
• Keyword blocking of HTTP traffic.
• Outbound service blocking. Limits access from your LAN to Internet locations or services that
you specify as off-limits.
• Denial of service (DoS) protection. Automatically detects and thwarts denial of service (DoS)
attacks such as Ping of Death, SYN flood, LAND Attack, and IP spoofing.
• Blocking unwanted traffic from the Internet to your LAN.
The following section explains how to configure your modem router to perform these functions.

How to Block Keywords and Sites

The modem router allows you to restrict access to Internet content based on functions such as Web
addresses and Web address keywords.
1. Log in to the modem router at its default LAN address of http://192.168.0.1 with its default
user name of admin and default password of password, or using whatever password and LAN
address you might have previously set for the modem router.