Motorola Netopia 3342N - Manual (Page 82)

Administrator’s Handbook
82
Link: Pinholes
Pinholes allow you to transparently route selected types of network traffic, such as FTP requests or HTTP
(Web) connections, to a specific host behind the Gateway. Creating a pinhole allows access traffic originat-
ing from a remote connection (WAN) to be sent to the internal computer (LAN) that is specified in the Pin-
hole page.
Pinholes are common for applications like multiplayer online games. Refer to software manufacturer appli-
cation documentation for specific traffic types and por t numbers.
Configure Specific Pinholes. Planning for Your Pinholes. Determine if any of the ser vice
applications that you want to provide on your LAN stations use TCP or UDP protocols. If an application does,
then you must configure a pinhole to implement por t for warding. This is accessed from the
Advanced ->
Pinholes page.
Example: A LAN Requiring Three Pinholes . The procedure on the following pages describes
how you set up your NAT-enabled Motorola Netopia® Gateway to suppor t three separate applications. This
requires passing three kinds of specific IP traffic through to your LAN.
Application 1: You have a Web server located on your LAN behind your Motorola Netopia® Gateway and
would like users on the Internet to have access to it. With NAT “On”, the only externally visible IP address
on your network is the Gateway’s WAN IP (supplied by your Ser vice Provider). All traffic intended for that LAN
Web ser ver must be directed to that IP address.
Application 2: You want one of your LAN stations to act as the “central repository” for all email for all of
the LAN users.
Application 3: One of your LAN stations is specially configured for game applications. You want this spe-
cific LAN station to be dedicated to games.
A sample table to plan the desired pinholes is:
For this example, Internet protocols TCP and UDP must be passed through the NAT security feature and the
Gateway’s embedded Web (HTTP) por t must be re-assigned by configuring new settings on the Internal
Ser vers page.
WAN Traffic Type Protocol Pinhole Name
LAN Internal IP
Address
Web TCP my-webser ver 192.168.1.1
Email TCP my-mailser ver 192.168.1.2
Games UDP my-games 192.168.1.3