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The Ethernet-over-ATM (EoA) protocol is commonly used to carry data between local 

area networks that use the Ethernet protocol and wide-area networks that use the ATM 

protocol. Many telecommunications industry networks use the ATM protocol. ISPs who provide 

DSL services often use the EoA protocol for data transfer with their customers' DSL modems. 

EoA can be implemented to provide a bridged connection between a DSL modem and the ISP. 

In a bridged connection, data is shared between the ISP's network and their customer's as if 

the networks were on the same physical LAN. Bridged connections do not use the IP protocol. 

EoA can also be configured to provide a routed connection with the ISP, which uses the IP 

protocol to exchange data. 

 

Interface: The name the software uses to identify the EoA interface. 

Interface Sec Type: The type of security protections in effect on the interface (public, private, 

or DMZ): 

z

 A 

public interface connects to the Internet (IPoA interfaces are typically public). Packets 

received on a public interface are subject to the most restrictive set of firewall protections 

defined in the software. 

z

 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. 

z

 The 

term 

DMZ (de-militarized zone), in Internet networking terms, refers to computers