Configuration Guide

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2.6.4. DMZ
In technology, the DMZ refers to a firewall between incoming WAN traffic and the LAN to which the CPE is
connected. Two basic DMZ methods are (a) using a single firewall, also known as the three-legged model,
and (b) using dual firewalls (Figure 36). These architectures can be expanded to create complex
architectures depending on the network requirements.
Figure 16: DMZ
When the LAN has a DMZ/firewall server, you can enable DMZ on the CPE so that packets from the WAN
are forwarded to the firewall (Figure 37). Alternatively, you can enable Internet Control Message Protocol
(ICMP) redirect error messages to support Layer 2 multicast features.
Figure 17: DMZ Settings
2.6.5. UPnP
The Universal Plug & Play (UPnP) function provides a set of networking protocols that allows device-to-
device networking on a local network. When UPnP is enabled, devices seamlessly and dynamically discover
each other’s presence on the network and attach to one another and to network services. Often, UPnP is
used for streaming media between devices on the network.
Go to Security > UPnP to enable the CPE to be searched by other devices (Figure 38). Once enabled, any
redirects of traffic will display in the Active UPnP Redirects section of the window.
Figure 18: UPnP Settings