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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): 
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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. 
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  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. 
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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 
"lower level" functions (i.e., closer to hardware) than the IPoA interface. 
Peer IP Address: The IP address of the remote computer you will be connecting to via the 
WAN interface.