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5.4.5 IPOA
This topic describes how to configure an
IPoA (Internet Protocol over ATM)
interface on
the ADSL/Ethernet router.
Interface:
The name the software uses to identify the IPoA interface.
Interface Security Type:
The type of firewall protections that are 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
that are available for both public and in-network accesses (such as a company's public
Web server). Packets incoming on a DMZ interface -- whether from a LAN or external
source -- are subject to a level of protection that is in between public and private
interfaces in terms of restrictiveness
RFC 1577:
Specifies whether the IPoA protocol to be used complies with the IEFT
specification named "RFC 1577 - Classical IP and ARP over ATM" (contact your ISP if unsure).
Lower interface:
An IPoA interface must be associated with one or more ATM VCs that have
been defined on the system. The ATM VC is also considered an interface--one that performs
