3 cautions with upnp, 2 upnp and zyxel, 1 configuring upnp – ZyXEL Communications P-2602R-DxA Series User Manual
Page 212: Figure 108 configuring upnp

P-2602R/RL-DxA Series User’s Guide
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Chapter 19 Universal Plug-and-Play (UPnP)
19.1.3 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.
All UPnP-enabled devices may communicate freely with each other without additional
configuration. Disable UPnP if this is not your intention.
19.2 UPnP and ZyXEL
ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum Creates
UPnP™ Implementers Corp. (UIC). ZyXEL's UPnP implementation supports IGD 1.0
(Internet Gateway Device). At the time of writing ZyXEL's UPnP implementation supports
Windows Messenger 4.6 and 4.7 while Windows Messenger 5.0 and Xbox are still being
tested.
UPnP broadcasts are only allowed on the LAN.
See later sections for examples of installing UPnP in Windows XP and Windows Me as well
as an example of using UPnP in Windows.
19.2.1 Configuring UPnP
Click Advanced > UPnP to display the screen shown next.
See
Figure 108 Configuring UPnP