D-Link DSL-302G User Manual page 57

To configure a new PPP interface click the Add button. A new
menu appears.
The PPP Configuration table displays the following fields:
PPP Interface
ATM VC
Interface Sec Type
Protocol
Service Name
Use DHCP
DSL-302G ADSL Modem User's Guide
The PPP interface you are configuring.
The Virtual Circuit over which this PPP data is sent. The VC identifies the
physical path the data takes to reach your ISP.
The type of Firewall protections that are in effect on the interface.
A public interface connects to the Internet (PPP interfaces are typically
public). Packets received on a public interface are subject to the most
restrictive set of firewall protections defined in the software.
A private interface connects to your LAN, such as the Ethernet interface.
Packets received on a private interface are subject to a less restrictive set
of protections, because they originate within the network.
The term DMZ (de-militarized zone), in Internet networking terms, refers to
computers that are available for both public and in-network accesses
(such as a company's public Web server).
The type of PPP protocol used. Your ISP may use PPP-over-Ethernet
(PPoE) or PPP-over-ATM (PPoA).
This feature is available with PPoE interfaces but not with PPoA
interfaces. The name of the ISP service you are using with this PPP
connection. ISPs may offer different types of services (for example, for
online gaming or business communications), each requiring a different
login and other connection properties.
When set to Enable, the device will acquire additional IP information from
the ISP's DHCP server. The PPP connection itself acquires the device's IP
address, mask, DNS address, and default gateway address.
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PPP Interface - Add