User Guide

Firewalls are either hardware (a physical item on your network ie your DSL router) or software
(resides on your computer ie Windows XP's built-in firewall software). In most cases, these
firewalls are configured to only allow 'basic' internet traffic (web, email, ftp, etc) to come in and
out of your network. Since the USB Server is a new product, these firewalls usually do not know
about Keyspan USB Server network data and may prevent you from communicating with your
USB Server.
If you are using a firewall, configure the firewall software to allow UDP traffic on port 3842 as
well as allow TCP/IP traffic on port 3842. The USB Server uses both UDP and TCP/IP to
communicate. If you have configured your firewall to allow UDP and TCP on port 3842 and you:
• Cannot See Your Server : skip ahead to the Wireless LANs or Wired LANs sub-section.
• Can See Your Server : Your firewall was preventing access to the Keyspan USB Server.
If you had to configure a software firewall on your computer, please note that you have
allowed only your computer to see your USB Server. If you configured a hardware
firewall, test other computers to make sure that they can the your USB Server.
Tech Note : We have included step-by-step instructions on how to configure the
software firewall that is built into Windows XP. You can find these instructions in the
Windows XP Firewall Configuration appendix in this manual.
Wireless LANs
If you have a wireless network, please make sure that your wireless base station has Ethernet
Bridging enabled. Ethernet bridging allow wireless computers to act as if they are directly
connected to a wired network. If this feature is not turned on, your wireless computers will not be
able to see that Keyspan USB Server where as your wired computers will have full access.
To test this, temporarily connect your wireless computer to your network via a wired connection
(ie connect using an Ethernet cable).
If you are not able see the USB Server after you've connected your computer via a wired
connection, please skip ahead to the wired LANs spend USB server sub-section.
If you are able to see the USB server when wired directly to the network, then you do not have
Ethernet Bridging turned on. Please enable Ethernet bridging on your wireless base station
(refer to your wireless base station's documentation for further instructions). If you have done this
and are still not able to see the USB server, please contact Keyspan technical support.
Tech Note : In most cases, wireless base stations and routers have Ethernet
bridging enabled. Older base stations and router may not have Ethernet Bridging
enabled or may not even support it. Please check your wireless base station's
documentation for details.
Keyspan:USB Server - User Manual
This User Manual applies to the Keyspan USB Server Software Version 1.0
Rev 2004apr06 Page 25