ZyXEL P-870HN-51D User Guide - Page 228
The UPnP Screen, Cautions with UPnP, UPnP and ZyXEL
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Chapter 19 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 Device 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. 19.3 The UPnP Screen Click Advanced > UPnP to display the screen shown next. See Section 19.1 on page 227 for more information. Figure 115 Advanced > UPnP 228 P-870HN-5xb User's Guide