ZyXEL Communications Corporation VSG1435B101 Manuel D’Utilisation

 Chapter 8 Home Networking

VSG1435-B101 Series User’s Guide

• Dynamic port mapping
• Learning public IP addresses
• Assigning lease times to mappings

Windows Messenger is an example of an application that supports NAT traversal 
and UPnP. 

 for more information on NAT.

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 ZyXEL 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. 

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. 

 for examples of installing and using UPnP.

 for technical background information on LANs.

Find out the MAC addresses of your network devices if you intend to add them to 
the DHCP Client List screen.