Chapter 4
:
Install, connect and configure your Telephony Gateway
Final 1.0 October 2018
Touchstone TG3442S Telephony Gateway User Guide
© 2018 ARRIS Enterprises LLC. All Rights Reserved.
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UPnP
UPnP is networking functionality, often used by gamers and online gaming applications,
which automatically opens or closes specific ports.
DMZ
DMZ is a physical or logical subnetwork that contains and exposes an organization's external-
facing services to the Internet. The purpose of a DMZ is to add an additional layer of security
to an organization's local area network (LAN). An external network can access those IPv4 or
IPv6 hosts exposed in the DMZ, while the rest of the organization's network is firewalled.