3com HomeConnect 3CRWE50194 User manual

Category
Networking
Type
User manual

This manual is also suitable for

HomeConnect™
Home Wireless Gateway
3CRWE50194
Home Network Management Solution
http://www.3com.com/
http://www.3com.com/productreg
Part No. 09-2015-000
Published October 2000
User Guide
3Com Corporation
5400 Bayfront Plaza
Santa Clara, California
95052-8145
U.S.A.
Copyright © 2000 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in
any form or by any means or used to make any derivative work (such as translation, transformation, or
adaptation) without written permission from 3Com Corporation.
3Com Corporation reserves the right to revise this documentation and to make changes in content from time to
time without obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied
or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability,
satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the
product(s) and/or the program(s) described in this documentation at any time.
If there is any software on removable media described in this documentation, it is furnished under a license
agreement included with the product as a separate document, in the hard copy documentation, or on the
removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy,
please contact 3Com and a copy will be provided to you.
UNITED STATES GOVERNMENT LEGEND
If you are a United States government agency, then this documentation and the software described herein are
provided to you subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense.
Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or
as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided
in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights only as
provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable. You agree
not to remove or deface any portion of any legend provided on any licensed program or documentation
contained in, or delivered to you in conjunction with, this User Guide.
3Com and the 3Com logo are registered trademarks and HomeConnect is a trademark of 3Com Corporation.
Windows is a registered trademarks of Microsoft Corporation. Macintosh and Mac OS are registered trademarks
of Apple Computer, Inc.
All other company and product names may be trademarks of the respective companies with which they are
associated.
EXPORT RESTRICTIONS
This 3Com product and/or software contains encryption and may require U.S. and/or local government
authorization prior to export or import to another country.
Contents
1 Welcome To Home Wireless
HomeConnect Wireless Gateway 1
Wireless Gateway Advantages 2
Firewall Technology 2
Kit Contents 4
Installation Map 5
Minimum System and Component Requirements 5
Where Do I Go Next? 5
2 Home Wireless Gateway
Front Panel 7
Rear Panel 8
3 Basic Installation
Introduction 11
Home Networking and Wireless Networking Basics 11
Positioning the Home Wireless Gateway 12
Attaching the Non-skid Feet 12
Connecting the Wireless Gateway to the Internet 12
External Cable and DSL Modem Connections 12
Connecting the Wireless Gateway to Your Network 13
Installing Adapters for Wireless and Wired Connections 14
Powering Up the Gateway 15
Setting Up Computers for Wireless Networking 15
Windows 15
Macintosh 16
Setting Up Computers for Ethernet Networking 16
Windows 17
Macintosh 17
4 Running the Setup Program
Accessing the Setup Program 19
Navigating Through the Setup Program 20
Main Menu 20
Options Menu 20
Gateway Setup Wizard 21
Changing Settings After Initial Setup 21
Contents
Setting Up Your Home Wireless Gateway 21
Starting the Setup Procedure 21
Setting Up Your Gateway for an Internet Connection 23
Setting Up Your Gateway for Wireless Communication 27
5 Advanced Features and System Tools
Status 29
Advanced Settings 30
NAT (Network Address Translation) 30
Firewall 31
DHCP Server 32
Controlling Access by Setting Client Privileges 33
To assign client privileges: 34
Special Considerations for Advanced Settings 35
Tools 35
System Test 35
Security Log 35
Reset Home Wireless Gateway 36
Restore Factory Settings 36
Update Firmware 36
6 Troubleshooting
Home Wireless Gateway 39
Cable or DSL Modem 39
Wireless Network 39
Ethernet Networks 39
3Com KnowledgeBase 40
A Technical Support
Online Technical Services 41
World Wide Web Site 41
3Com FTP Site 41
Support from Your Network Supplier 41
Support from 3Com 42
Returning Products for Repair 44
Glossary
Contents
Index
Warranty and Regulatory Compliance
List of Figures
1 Home Network Without a Wireless Gateway 1
2 Home Network Using a Wireless Gateway 2
3 HomeConnect Wireless Gateway Kit Contents 4
4 Home Wireless Gateway 7
5 Home Wireless Gateway - Front Panel 7
6 Home Network Gateway - Rear Panel 8
7 Cable or DSL Modem Connected to the Gateway 13
8 Connecting the Gateway to an Ethernet Network 15
9 Web Browser Location Field 19
10 Home Network Gateway Main Screen 20
11 Setup Screen 22
12 Cable/DSL Setup | Standard Screen (Top Portion) 24
13 Cable/DSL Setup | Standard Screen (Bottom Portion) 25
14 Cable/DSL Setup | Advenced Screen 26
15 Status Page 29
16 Advanced Settings | NAT Screen 30
17 Advanced Settings | Firewall Screen 31
18 Advanced Settings | DHCP Server Screen 32
19 Advanced Settings | Client Privileges Screen 33
1
1 Welcome To Home Wireless
In todays fast-paced world, communication and sharing information are
crucial. Computer networks are among the fastest ways to share information,
and wireless computer networks are rapidly becoming the most convenient
way of connecting computers. 3Com has brought this exciting technology into
the home with the HomeConnect
TM
Wireless Gateway.
The products that compose the HomeConnect line give you, the home user,
the same power, flexibility, and protection that has been available only to large
corporations. Now, you can network the computers in your home, connect
them all to a single Internet outlet, and harness the combined power of all of
your computers using both wired and wireless connections.
HomeConnect Wireless Gateway
The HomeConnect Wireless Gateway is designed to provide effective and
transparent management of both your home computer network, as well as
your connection to the Internet with the convenience of a wireless connection.
The gateway also provides protection in the form of an electronic firewall,
preventing anyone outside of your network from seeing your files or
damaging your computers.
As you can see in Figure 1, one computer is connected to the Internet. This
computer must always be powered on for the other computers on the
network to access the Internet.
Figure 1
Home Network Without a Wireless Gateway
When you use the wireless gateway in your network (Figure 2), it becomes
your connection to the Internet, as well as providing you with many other
options, such as network management, firewall protection, and roaming
Cable or DSL
modem
Internet
2
1 Welcome To Home Wireless
capability. Both wired and wireless connections can be made to the gateway,
expanding the number of computers you can have in your home network.
Figure 2
Home Network Using a Wireless Gateway
Wireless Gateway Advantages
Shared Internet connection without cables.
Flexible wireless networking, featuring Ethernet connectivity and
seamless networking between both media.
No need for a dedicated, always on computer serving as your Internet
connection.
Cross-platform operation for compatibility with Windows and Macintosh
computers
Easy access to corporate networks.
Easy-to-use, Web-based setup and configuration.
Use wireless systems from work, school, or home.
Firewall Technology
Your wireless gateway also provides your home network with always-on,
fully-integrated firewall technology. The preconfigured firewall security uses
dynamic packet filtering to provide a robust and flexible defense system for
your home network.
Cable or DSL
modem
Internet
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1 Welcome To Home Wireless
3
The firewall looks for known data patterns used by hackers, and prevents
them from harming your network. Updates are available online to detect and
block out new hacker patterns.
Your firewall will:
Protect the personal, financial, and work-related information on your
network.
Keep hackers from using your identity to send unauthorized messages.
Keep out unwanted downloads.
The wireless firewall technology protects against the following types of hacker
attacks:
IP spoofing: The hacker finds a valid IP address in a target network that
is considered to be a "trusted address," then sends packets with a
modified packet header pretending to be sent from the "trusted
address".
Land attack: The hacker utilizes a spoofed packet with the SYN bit set
and source/destination addresses matching with the target machine. The
target system then hangs or crashes. The firewall will inspect packets to
prevent this condition from happening.
Ping of death: Some TCP/IP stacks will hang or crash when they receive
large ping packets because of packet memory allocation overflow. The
firewall blocks illegal ping packets that are longer than the specification.
IP with zero length: The first fragment of an IP packet is not always
required to have an offset value of zero. By manipulating the "more
fragments" bit and sending decoy packets, the hacker can cause the
target system to assemble malicious packets. The firewall can block this
kind of attack.
Smurf attack: In this denial of service attack, the hacker sends large
quantities of ICMP echo (ping) request traffic to IP broadcast destination
address with a spoofed source address. Most IP network hosts will
respond with an echo reply causing a massive traffic jam. The firewall
intercepts ICMP Echo packets with x.x.x.0 or x.x.x.255.
UDP port loopback: Hackers use UDP scans (transmit 0 byte-length
UDP packets) to locate open ports, then access configurable ports. These
ports can then exploit vulnerable applications such as SNMP, tftp, or NFS.
The firewall detects and blocks these attacks.
Snork attack: This is a denial of service attack that makes vulnerable
systems continuously bounce packets and tie up CPU and network
resources. The firewall will deny all incoming UDP packets with a
destination port of 135 and a source port of 7, 19, or 135.
4
1 Welcome To Home Wireless
TCP null scan: This is a more advanced hacker scan technique to detect
open ports that can be penetrated. The null scan packet turns off all
flags and is transparent to weaker firewalls that only block SYN packets.
TCP SYN flooding: The SYN packet is the first packet sent when two
systems try to establish a TCP connection. The hacker floods the target
system with incomplete connection requests containing fake return
addresses. The system cannot complete these requests and is overloaded
by this denial of service attack.
Kit Contents
The Home Wireless Gateway kit includes the following items (Figure 3):
HomeConnect Wireless Gateway
Power adapter with plug adapters (3)
Nonskid feet (4)
Ethernet cable (Category 5)
Installation map
User guide
Registration card
If any of these items are missing or damaged, please contact your retailer.
Figure 3
HomeConnect Wireless Gateway Kit Contents
Power adapter
Ethernet cable
Nonskid feet
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United
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Australia
1 Welcome To Home Wireless
5
Installation Map
If you want to perform a basic installation of your HomeConnect Wireless
Gateway, please refer to the included installation map. The installation map
provides a graphical, step-by-step procedure that allows you to set up your
home network for multiple computers and other devices.
Minimum System and Component Requirements
Your HomeConnect Wireless Gateway requires that the computer(s) and
components in your home wireless network be configured with at least the
following:
Windows Millennium Edition (Windows Me), Windows NT, Windows
2000, Windows 98, Windows 95, or Mac OS 8.5 or higher.
A wireless network interface card (NIC), purchased separately, for each
computer that you will use for a wireless connection to your home
wireless network.
An Ethernet 10Mbps or 10/100 Mbps NIC, purchased separately, for
each wired computer to be connected to the three-port switch on your
home wireless gateway.
A cable modem or DSL modem with an Ethernet port (RJ-45 connector).
Active Internet access account.
Web browser program, such as Netscape 3.0 or higher, or Internet
Explorer 4.0 or higher.
Where Do I Go Next?
The rest of this user guide contains detailed information about your gateway
and how to connect it to your home network and the Internet.
Chapter 2, Home Wireless Gateway,
familiarizes you with the front
and rear panels of the gateway, including descriptions of indicator lights
(LEDs) and ports.
Chapter 3, Basic Installation,
explains the physical connections
between the gateway and the Internet, the wireless and wired
connections between the gateway and your computer(s), as well as how
to configure the computers on your network.
Chapter 4, Running the Setup Program,
contains a basic overview of
the setup program for setting up wireless communication and Internet
connections.
6
1 Welcome To Home Wireless
Chapter 5, Advanced Features and System Tools, explains the
additional features of your gateway, such as setting up client privileges
and performing firmware updates.
Chapter 6, Troubleshooting, provides troubleshooting tips.
Appendix A, Technical Support, provides information on how to
contact 3Com for technical support.
Glossary, which provides definitions for key terms concerning the
installation and operation of the gateway.
7
Home Wireless Gateway
This chapter will familiarize you with your HomeConnect Home Wireless
Gateway (Figure 4).
Figure 4
Home Wireless Gateway
Information in this chapter includes:
A description of the gateway front panel indicator lights (LEDs).
A description of the rear panel connectors.
Front Panel
The front panel of the gateway contains a series of indicator lights (LEDs) that
help describe the state of various networking and connection operations.
Figure 5
Home Wireless Gateway - Front Panel
Power
W
ireless
WAN
HomeConnect
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LAN
Power
WirelessWAN
HomeConnect
Home Wireless Gateway
LAN
2
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2 Home Wireless Gateway
Rear Panel
The rear panel (Figure 6) of the gateway contains four ports, a reset switch,
and a power adapter socket.
Figure 6
Home Network Gateway - Rear Panel
Table 1
Front Panel LEDs
LED Description
Power The Power indicator LED informs you when the gateway is on or off. If this
light is on, the gateway is on; if it is not on, the gateway is off. During
firmware upgrades and resets, this light will blink yellow (see Update
Firmware on page 36).
WAN This light indicates the state of your Internet connection. When on, the WAN
light indicates that the gateway is connected to the Internet through your
external cable or DSL modem. When the WAN light is off, the gateway does
not have an active connection to the Internet.
Wireless This light displays the state of your wireless connection. If the light is blinking
rapidly, a connection is established with an associated wireless client. If the
light is blinking slowly, no wireless client is associated with the gateway.
LAN These three lights (one per port) display the state of your Ethernet
connections. If the light is on, that port is connected to your Ethernet
network. If the light is off, the port is not connected to your Ethernet
network.
Reset
Cable/DSL 1X 2X 3X
6V
+
_
2 Home Wireless Gateway
9
Table 2
Rear Panel Connectors
Connector Description
Power Adapter
Socket
The power adapter socket accepts the power adapter connector. To
power up the gateway, simply insert the connector into the socket,
and then plug the other end into a standard electrical wall socket.
For easy identification, the power adapter socket is surrounded by a
yellow border.
Plug Adapters
Three plug adapters are provided with your home wireless gateway to
connect the power adapter to international power sockets.
Reset The light blue Reset button is used to reset the gateway.
A soft reset keeps your gateway settings. To perform a soft reset,
push the reset button once.
A hard reset returns your gateway settings to their factory default
state. To perform a hard reset, push and hold the reset button for 3
seconds.
Cable/DSL The Cable/DSL port (identified by a dark blue border) accepts an RJ-45
connector to connect your gateway to the Internet.
See External Cable and DSL Modem Connections on page 12 for
more details.
Ethernet Three ports are available to connect to Ethernet hubs or to connect
other Ethernet-compatible computers to the gateway. These are
dual-speed (10/100 Mbps) ports that accept an RJ-45 connector. For
easy identification, the Ethernet ports are surrounded by a green
border.
See Setting Up Computers for Ethernet Networking on page 16 for
more details.
11
Basic Installation
Introduction
This chapter will guide you through a basic installation of the HomeConnect
Home Wireless Gateway, including:
Connecting the wireless gateway to the Internet.
Connecting the wireless gateway to your network.
Setting up your computers for wireless and/or wired (Ethernet)
networking with the gateway.
Home Networking and Wireless Networking Basics
A home network is a way to connect all of your computing devices together
(computers, printers, scanners, modems) in order to share files and resources.
Once youve created your home network, you will be able to connect to the
Internet from any computer in your house. If you have a printer, scanner, or fax
connected to your home network, you will also be able to print, scan, or fax
from any computer in your house. With the addition of the 3Com Home
Wireless Gateway to your home network, you can combine both wireless and
wired networking.
Your wireless gateway uses radio signals to transmit and receive data without
wires. You can communicate with the network by establishing radio links
between your computer(s) and the gateway. To do so, every computer you
want to use for a wireless connection must be equipped with a wireless
network interface card (NIC).
The gateway also uses Ethernet cables for connections to your wired network,
as well for connecting to the cable/DSL modem for connecting to the Internet.
Ethernet networking uses special Ethernet cables to connect computers,
printers, and other devices together. Among the advantages of Ethernet
networking is a higher network speed (up to 100 Mbps), and the ability to use
Ethernet hubs to expand your network.
NOTE:
You can use your wireless gateway for either wireless networking
or Ethernet networking, or both. You can also set up your home wireless
gateway for home networking only; connecting to the Internet is
optional.
3
12
3 Basic Installation
Positioning the Home Wireless Gateway
You should place the home wireless gateway in a location that:
is centrally located to the computers that will connect wirelessly to the
gateway. In a two-story home, this location might be on top of a
centrally-located high shelf or similar furniture to optimize wireless
connections to computers in both horizontal and vertical directions,
allowing coverage throughout the entire house.
is conveniently located for connection to the cable or DSL modem that
will be used to connect to the Internet (remember that connection to the
Internet is not required to use the wireless gateway).
allows convenient connection to the computers that will be connected to
the three LAN ports on the rear panel, if desired.
allows easy viewing of the front panel LED indicator lights, and access to
the rear panel connectors, if necessary.
Attaching the Non-skid Feet
1 Detach one of the four non-skid feet from the paper backing.
2 Apply the foot to one of the four bottom corners of the gateway
(each corner is marked with a small arc symbol to note the proper
location of the foot).
3 Repeat steps 1 and 2 for the remaining three non-skid feet.
Connecting the Wireless Gateway to the Internet
The first step for installing your gateway is to physically connect it to a cable or
DSL modem in order to be able to access the Internet. Connecting to the
Internet is optional. If you are not going to connect to the Internet through the
gateway, skip this procedure and proceed directly to the Connecting the
Wireless Gateway to Your Network procedure to connect your gateway to
your home network.
External Cable and DSL Modem Connections
To use your gateway to connect to the Internet through an external cable or
DSL modem (Figure 7):
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3com HomeConnect 3CRWE50194 User manual

Category
Networking
Type
User manual
This manual is also suitable for

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