Chapter 14. Configuring Filters and Blocking Protocols
157
+
The Blocked Protocols feature enables you to prevent the
ADSL/Ethernet router from passing any data that uses a particular
protocol. Unlike the IP filter feature, you cannot specify additional
criteria for blocked protocols, such as particular users or
destinations. However, when you are certain that a particular
protocol is not needed or wanted on your network, this feature
provides a convenient way to discard such data before it is passed.
To display the Blocked Protocols page, click the Services tab, and
then click "#" in the task bar. The Blocked
Protocols page displays:
Figure 66. Blocked Protocols Page
WARNING
Blocking certain protocols may disrupt or disable your network
communication or Internet access. If you are unfamiliar with how
your network or Internet connection uses these protocols, contact
your ISP before disabling.
The following list describes each of the available protocols.
Protocol Description
PPoE
Point-to-Point Protocol over Ethernet. Many DSL
modems use PPoE to establish and maintain a
connection with a service provider. PPoE provides a
means of logging in to the ISPs servers so that they
can authenticate you as a customer and provide you
access to the Internet. Check with your ISP before
blocking this protocol.
