ZyXEL NBG-417N User Guide - Page 139
UPnP Screen, Cautions with UPnP
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Chapter 17 Universal Plug-and-Play (UPnP) Cautions with UPnP The automated nature of NAT traversal applications in establishing their own services and opening firewall ports may present network security issues. Network information and configuration may also be obtained and modified by users in some network environments. When a UPnP device joins a network, it announces its presence with a multicast message. For security reasons, the NBG-417N allows multicast messages on the LAN only. All UPnP-enabled devices may communicate freely with each other without additional configuration. Disable UPnP if this is not your intention. 17.4 UPnP Screen Use this screen to enable UPnP. Click the Management > UPnP to open the following screen. Figure 88 Management > UPnP > General The following table describes the labels in this screen. Table 61 Management > UPnP > General LABEL DESCRIPTION Enable the Universal Plug and Play (UPnP) Feature Select this check box to activate UPnP. Be aware that anyone could use a UPnP application to open the Web Configurator's login screen without entering the NBG-417N's IP address (although you must still enter the password to access the Web Configurator). Allow users to make port forwarding changes through UPnP Select this check box to allow UPnP-enabled applications to automatically configure the NBG-417N so that they can communicate through the NBG-417N, for example by using NAT traversal, UPnP applications automatically reserve a NAT forwarding port in order to communicate with another UPnP enabled device; this eliminates the need to manually configure port forwarding for the UPnP enabled application. Apply Click Apply to save the setting to the NBG-417N. Reset Click Reset to begin configuring this screen afresh. NBG-417N User's Guide 139