ATL Telecom AM30 - Manual (Page 142)

142 ATL Telecom User Guide
AM30
Blocking Protocols
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 Blocked
Protocols in the task bar. The Blocked Protocols page displays, as shown in Figure 64.
Figure 64. 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.
IP Multicast IP Multicast is an extension to the IP protocol. It
enables individual packets to be sent to multiple
hosts on the Internet, and is often used for
handling e-mail mailing lists and
teleconferencing/videoconferencing.