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Chapter 8 Home Networking
VMG5313-B10A/-B30A Series User’s Guide
141
• Assigning lease times to mappings
Windows Messenger is an example of an application that supports NAT traversal and UPnP.
See the Chapter 11 on page 181 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 VMG 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 Section 8.4.1 on page 147 for examples of installing and using UPnP.
Finding Out More
See Section 8.9 on page 152 for technical background information on LANs.
8.1.3 Before You Begin
Find out the MAC addresses of your network devices if you intend to add them to the DHCP Client
List screen.
8.2 The LAN Setup Screen
Use this screen to set the Local Area Network IP address and subnet mask of your VMG. Click
Network Setting > Home Networking to open the LAN Setup screen.
Follow these steps to configure your LAN settings.
1 Enter an IP address into the IP Address field. The IP address must be in dotted decimal notation.
This will become the IP address of your VMG.
2 Enter the IP subnet mask into the IP Subnet Mask field. Unless instructed otherwise it is best to
leave this alone, the configurator will automatically compute a subnet mask based upon the IP
address you entered.