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3.5.4. 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 38: 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 39: DMZ Settings
3.5.5. 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 40: UPnP Settings
