ZyXEL P-660RU-T1 v3s User Guide - Page 128
The UPnP Screen, Cautions with UPnP, UPnP and ZyXEL
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Chapter 17 Universal Plug-and-Play (UPnP) Windows Messenger is an example of an application that supports NAT traversal and UPnP. See the NAT chapter for more information on NAT. 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 P-660RU-Tx 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. UPnP and ZyXEL ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum UPnP™ Implementers Corp. (UIC). ZyXEL's UPnP implementation supports Internet Gateway Device (IGD) 1.0. See the following sections for examples of installing and using UPnP. 17.2 The UPnP Screen Use the following screen to configure the UPnP settings on your P-660RU-Tx. Click Access Management > UPnP to display the screen shown next. Figure 52 Access Management > UPnP 128 P-660RU-Tx User's Guide