Related Manuals for Linksys BEFCMUH4
Summary of Contents for Linksys BEFCMUH4
- Page 1 Instant Broadband ® Series Cable Gateway Modem / Router / USB / Home PNA / 4-Port Switch / Wireless-Ready Use this guide to install the following product: BEFCMUH4 User Guide...
- Page 2 Linksys reserves the right to revise or update its prod- ucts, software, or documentation without obligation to notify any individual or entity.
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Page 3: Table Of Contents
Cable Gateway Instant Broadband ® Series Table of Contents Chapter 1: Introduction The Linksys Cable Gateway Features An Introduction to LANs and WANs IP Addresses Network Setup Overview Chapter 2: Getting to Know the Cable Gateway The Cable Gateway’s Back Panel Ports... -
Page 4: Chapter 1: Introduction
Ethernet network where you have several PCs utilizing one Internet connection simul- taneously. Plus, if you add a Linksys wireless PC Card, it can be used as an Access Point and the Gateway can bridge your Ethernet network with your wireless PCs. -
Page 5: An Introduction To Lans And Wans
Think of the Cable Gateway as a network device with two sides: the first side is made up of your private Local Area Network (LAN) of PCs. The other, public side, is the Internet, or the Wide Area Network (WAN), outside of your home or office. -
Page 6: Network Setup Overview
Series Cable Gateway Chapter 2: Getting to Know the Cable Gateway The Cable Gateway’s Back Panel Ports The Cable Gateway’s ports are located on the back panel of the Cable Gateway, as shown in Figure 2-1. On/Off Switch Power Reset... -
Page 7: The Reset Button
There are three ways to reboot the Cable Gateway: 1) Briefly press the Reset Button. 2) Turn the Cable Gateway’s power off for a few seconds and power it back on again. 3) Unplug the Cable Gateway’s power adapter and plug it back in again. -
Page 8: The Usb Icon
PCs and the Cable Gateway. 1. Connect the coaxial cable that is provided by your cable service provider to the Cable port that is on the back of the Cable Gateway, as shown in Figure 3-1. Figure 5-2 2. -
Page 9: Chapter 4: Configuring The Pcs
Figure 3-4 Note: If you have a Linksys wireless PC Card, be sure to fully insert it into the PC Card slot on the back of the Cable Gateway before turning on the power. You must have this card inserted in order to use the Cable Gateway's wireless features. -
Page 10: Windows 2000
(if “D” is the letter of your CD-ROM drive). does not ask you to restart, restart your computer anyway. Go to “Chapter 5: Using the Cable Gateway’s Web-based Utility.” then Control Panel. From there, double-click the Network and Dial-up Connections icon. -
Page 11: Windows Xp
IP address automatically, as shown in Figure 4-5. Once the new win- dow appears, click the OK button. Click the OK button again to complete the PC configuration. Figure 4-5 6. Restart your computer. Go to “Chapter 5: Using the Cable Gateway’s Web-based Utility.” Cable Gateway Instant Broadband ® Series... -
Page 12: Chapter 5: Using The Cable Gateway's Web-Based Utility
Accessing the Web-Based Utility For your convenience, an administrative utility has been programmed into the Cable Gateway. From this browser-based utility, you can view the Cable Gateway’s current status and, when wireless functions are enabled, administer the wireless settings. This chapter explains all of the functions in this utility. -
Page 13: The Basic Tabs
The Basic Tabs The Setup Tab This screen allows you to change the setup of the Cable Gateway. Figure 5-3 Network Configuration LAN IP Address The values for the Cable Gateway’s IP address are shown here. The default value is 192.168.0.1. -
Page 14: The Advanced Tabs
Force Available button. The selected com- puter’s IP address will then be available for another computer to connect to the network. Click the Apply button to apply any changes to the settings. Cable Gateway Instant Broadband ® Series... - Page 15 Cable Gateway,. enter http://<WAN IP Address>:8080 into the browser of any PC on the Internet. Press the Enter key. Note: Linksys recommends that you change the password for your Cable Gateway if you enable Remote Config Management. Multicast Enable...
- Page 16 This screen allows you to configure MAC Address filters. Figure 5-3 Enter the MAC Addresses that you want to filter into the MAC Address Filters fields. Click the Apply button to apply any changes to the settings. Cable Gateway Instant Broadband ® Series Port Filtering Tab This screen allows you to configure TCP/UDP port filters.
- Page 17 For added security, Internet users will be able to communicate with the server, but they will not actually be connected. The packets will be forwarded through the Cable Gateway instead. If you need to forward all ports to one PC, see the DMZ Host Tab.
- Page 18 2. Select the protocol for each port you want to forward, TCP, UDP, or Both. 3. Click the Enable button to enable the changes. To delete a server entry, enter 0 in the Trigger Range and Target Range fields. Click the Apply button to apply any changes. Cable Gateway Instant Broadband ® Series DMZ Host Tab This screen allows you to configure an address that is visible to the WAN.
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Page 19: The Firewall Tabs
All websites con- taining that word will be blocked. Click the Add Keyword button after each entry. To remove a word from the list, highlight the word, then click the Remove Keyword button. Cable Gateway Instant Broadband ® Series Domain Blocking... -
Page 20: The Status Tabs
® Series The Status Tabs The Software Tab This screens shows a summary of information on the Cable Gateway, its soft- ware, and its status, as shown in Figure 5-3. There are two sections: Information and Status. Information Standard Specification Compliant This field identifies which version of... - Page 21 Cable Gateway Instant Broadband ® Series The Connection Tab This screen shows a summary of information on the Cable Gateway’s cable connection, as show in Figure 5-4. Procedure Downstream Channel Upstream Channel Figure 5-3 These statistics reflect your ISP’s and the Cable Gateway’s connection procedure.
- Page 22 The Security Tab This screens allows you to change your password for the Cable Gateway and restore the Cable Gateway’s factory default settings, as shown in Figure 5-5. Password To change your network administrator’s password for the Cable Gateway, enter the new password into the Password field.
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Page 23: The Wireless Tabs
Cable Gateway. The wireless settings in the Cable Gateway will only work with this card. If this card is not properly inserted into the Cable Gateway’s Wireless PC Card Slot, a screen similar to that shown in Figure 5-6 appears when Wireless is clicked in the Web-Based Utility. - Page 24 Service Set Identifier The SSID is a unique name for your wireless network. (SSID) It is case sensitive and must not exceed 32 characters. The default SSID is "linksys" but you should change this to a personal wireless network name. All wireless points in your network must use the same SSID.
- Page 25 WEP to function properly. Important: Some wireless products allow the use of a “passphrase” in generating a WEP key. The Cable Gateway does not, at present, allow the use of a “passphrase” and requires the WEP key to be entered manually.
- Page 26 Beacon Interval This value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Cable Gateway to keep the network synchronized. A beacon includes the wireless LAN service area, the IP address, the Broadcast destination addresses, a time stamp, Delivery Traffic Indicator Maps, and the Traffic Indicator Message (TIM).
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Page 27: Appendix A: Troubleshooting
Gateway’s installation and operation. If your situation is described here, the problem should be solved by applying the corresponding solution. If you can’t find an answer here, check the Linksys website at www.linksys.com. 1. The Cable Gateway is not working. - Page 28 ISP. Does the Cable Gateway support any operating system other than Windows 95, 98, Me, NT, 2000, or XP? Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems.
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Page 29: Appendix B: Configuring Wireless Security In Windows Xp
WEP encryption has been called 40-bit because it uses a 40-bit secret key along with a 24-bit Initialization Vector (40 + 24 = 64). Wireless vendors may use either name. Linksys uses the term “64-bit” when referring to this level of encryption. - Page 30 Be sure you have the WEP Key generated in the Gateway, shown in the Key 1 field. 1. Click the Start button and go to the Control Panel. Figure B-1 Cable Gateway Instant Broadband ® Series 2. In the “Control Panel” window, click the Network and Internet Connections icon.
- Page 31 Gateway’s SSID. Then, double-click the Wireless Network Connection icon. Figure B-4 5. When the “Wireless Network Connection Status” window appears, click the Properties button. Figure B-5 Cable Gateway Instant Broadband ® Series 6. When the “Wireless Network Connection Properties” window appears, click the Wireless Networks Tab.
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Page 32: Appendix C: Installing The Tcp/Ip Protocol
Windows XP desktop. Close any applications and reboot your PC. After reboot, WEP configuration is complete and you should be able to connect wirelessly to the Gateway. Cable Gateway Instant Broadband ® Series... -
Page 33: Appendix D: Finding The Mac Address And Ip Address For Your Ethernet Adapter
8. Click the OK button. Windows may ask for original Windows installation files. Supply them as needed, e.g., c:\windows\options\cabs, D:\win98, D:\win95. 9. Windows will ask you to restart the PC. Click the Yes button. The TCP/IP installation is now complete. Cable Gateway Instant Broadband ® Series Appendix D: Finding the MAC... - Page 34 IP address for your Ethernet adapter. 1. Click on Start and Run. In the Open field, enter cmd. Press the Enter key or click the OK button. Figure D-4 Cable Gateway Instant Broadband ® Series 2. In the command prompt, enter ipconfig /all. Then press the Enter key.
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Page 35: Appendix E: Glossary
When entering the information using the Router’s web-based utility, you will type the 12-digit MAC address in this format, XXXXXXXXXXXX without the hyphens for MAC Filtering. Figure D-6 Cable Gateway Instant Broadband ® Series Appendix E: Glossary 10BaseT - An Ethernet standard that uses twisted wire pairs. - Page 36 Denial of Service attack. Denial of Service Attack - An assault on a network that floods it with so many additional requests that regular traffic is either slowed or completely interrupt- Cable Gateway Instant Broadband ®...
- Page 37 ROM or PROM, it is retained even when the device is turned off. Fragmentation - Breaking a packet into smaller units when transmitting over a network medium that cannot support the original size of the packet. Cable Gateway Instant Broadband ®...
- Page 38 IP layer. IPSec supports two basic modes: Transport and Tunnel. Transport encrypts the payload of each packet, leaving the header untouched, while Tunnel mode encrypts both the header and the pay- Cable Gateway Instant Broadband ®...
- Page 39 RTS (Request To Send) - An RS-232 signal sent from the transmitting station to the receiving station requesting permission to transmit. Cable Gateway Instant Broadband ® Series Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services.
- Page 40 With USB, you can add a new peripheral to your computer without having to add an adapter card or powering down the computer. USB also supports hot-swapping, the addition or removal of devices while the computer is running. Cable Gateway Instant Broadband ® Series USB 1.1-compliant devices support data rates of 1.5Mbps (low-speed) and up...
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Page 41: Appendix F: Specifications
Ports/Switches/Buttons HPNA RJ-11 Cable F-type female 75 ohm connnector Type B USB Port Four 10/100 RJ-45 Switched Ports PCMCIA Type II Slot (for use with Linksys WPC11 only) Switch On/Off Button Reset Other Power Input Speed 10/100 Mbps (Half/Full Duplex) -
Page 42: Environmental
FROM THE PRODUCT’S PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. IN NO EVENT SHALL LINKSYS’S LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCI- DENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. -
Page 43: Appendix H: Contact Information
Appendix H: Contact Information For help with the installation or operation of the Cable Gateway, contact Linksys Technical Support at one of the phone numbers or Internet addresses below. Sales Information 800-546-5797 (1-800-LINKSYS) Technical Support 800-326-7114 (toll free from U.S. or Canada)*...