Pinholes; Configure Specific Pinholes; Planning For Your Pinholes; Example: A Lan Requiring Three Pinholes - Motorola 2200 Administrator's Handbook

Administrator's Handbook
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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 port numbers.
Configure Specific Pinholes. Planning for Your Pinholes.
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 port forwarding. This is accessed from the Advanced ->
Pinholes page.

Example: A LAN Requiring Three Pinholes .

how you set up your NAT-enabled Motorola Netopia® Gateway to support 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 Service Provider). All traffic intended for that LAN
Web server 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:
WAN Traffic Type
Web
Email
Games
For this example, Internet protocols TCP and UDP must be passed through the NAT security feature and the
Gateway's embedded Web (HTTP) port must be re-assigned by configuring new settings on the Internal
Servers page.
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The procedure on the following pages describes
Protocol Pinhole Name
TCP my-webserver
TCP my-mailserver
UDP my-games
Determine if any of the service
LAN Internal IP
Address
192.168.1.1
192.168.1.2
192.168.1.3