TRENDnet Cable Modem/xDSL TW100-W1CA - Manual (Page 39)

- 35 -
addresses on a LAN with an existing DHCP server may cause problems throughout a network.
It is recommended you disable other DHCP serves on the network if you plan on using this
product on the network.
IP address conflict
When you see the message box prompted for IP address conflict, this means two or more
workstations has the same IP address. If you have setup the device as a DHCP server, please
run the "winipcfg" utility to “release” all current configuration first, then “renew” the IP
information again. If the DHCP function is disabled and static IP addresses are assigned to
each workstation, please double check each workstation’s IP address for duplicate IP.
My Internet application won't work
To protect your computer from Hackers, the product uses “port blocking” technology. A port
is like a door into your computer. Each service on the Internet has an associated port. The
device protects your computer by closing certain ports, so that malicious programs can't
access your computer. However, if you are using an application that requires one of these
blocked ports, the application will not work. In this case, you will have to manually open these
ports to allow the application to work properly.
Some applications that may be affected are
Some Email Programs
Some Multi-Player Games
Some Internet Phone/Video Conferencing Applications
Als o, there are some applications, which require reverse connection over the Internet. In other
words, when you are connected to these applications, you have to open your ports for two -
way connection.
The first thing you will need to do is determined what port (or ports) the application uses. The
fastest way to find this information is to go to the software maker's web site, go to the support
section, and look for information related to NAT, Proxy Server, or Firewall. This information
will typically list 1 to 3 ports that need to be opened for proper operation of the software. If
you can't find the necessary information, call the software maker and ask for what ports need
to be opened for the software to work through a firewall.
Once you have the necessary port information, follow the instructions below to setup the
“Virtual Server”.
A. Launch the Windows GUI Setup Software and press "Find". Once the GUI Setup Software
finds the product, press " Configure":