SMC Networks SMCD3G User manual

SMC Networks
20 Mason
Irvine, CA. 92618
U.S.A.
Copyright © 2010 SMC Networks
All Rights Reserved
Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However,
no responsibility is assumed by SMC for its use, or for any infringements of patents or other rights of
third parties which may result from its use. No license is granted by implication or otherwise under
any patent or patent rights of SMC. SMC reserves the right to change specifications at any time
without notice
No part of this publication may be reproduced or transmitted in any form or by any means, electronic
or mechanical, including photocopying and recording, or stored in a database or retrieval system for
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registered trademarks of Apple, Inc. All other brands, product names, trademarks, or service marks
are property of their respective owners.
SMCD3G Cable Modem Gateway User Manual

Contents
Preface...................................................................................................................... v
Key Features.............................................................................................................. vi
Document Organization..............................................................................................vii
Document Conventions..............................................................................................vii
Safety and Warnings............................................................................................vii
Typographic Conventions..........................................................................................viii
1 Getting to Know Your Gateway........................................................................... 9
Unpacking Package Contents...................................................................................10
System Requirements...............................................................................................10
Front Panel................................................................................................................11
Rear Panel ................................................................................................................13
Restoring Factory Defaults........................................................................................13
2 Installing Your Gateway..................................................................................... 14
Finding a Suitable Location.......................................................................................15
Connecting to the LAN..............................................................................................15
Connecting the WAN.................................................................................................16
Powering on the Gateway.........................................................................................16
3 Configuring Your Computer for TCP/IP............................................................ 17
Configuring Microsoft Windows 2000........................................................................18
Configuring Microsoft Windows XP...........................................................................19
Configuring Microsoft Windows Vista........................................................................20
Configuring an Apple®Macintosh®Computer ...........................................................22
4 Configuring Your Gateway ................................................................................ 23
Pre-configuration Guidelines.....................................................................................24
Disabling Proxy Settings......................................................................................24
Disabling Proxy Settings in Internet Explorer ................................................24
Disabling Proxy Settings in Firefox................................................................24
Disabling Proxy Settings in Safari .................................................................25
Disabling Firewall and Security Software............................................................25
Confirming Your Gateway’s Link Status..............................................................25
Accessing the Gateway’s Web Management............................................................26
Understanding the Web Management Interface Screens .........................................27
Web Management Interface Menus..........................................................................28
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Contents
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System Settings Menu.........................................................................................29
Password Settings Menu.....................................................................................30
LAN Settings Menu..............................................................................................32
Port Forwarding Menu.........................................................................................33
Adding a Port Forwarding Entry for a Predefined Service.............................33
Adding a Port Forwarding Entry for a Customer-Defined Service.................35
Security Settings (Firewall) Menu........................................................................38
Enabling or Disabling Firewall.......................................................................38
Configuring Access Control...........................................................................39
Configuring Special Applications...................................................................47
Configuring URL Blocking .............................................................................50
Configuring Schedule Rules..........................................................................52
Configuring Email and Syslog Alerts .............................................................53
Configuring DMZ Settings .............................................................................56
Using the Reboot Menu to Reboot the Gateway.................................................57
Viewing Status Information..................................................................................58
Appendix A - Specifications ................................................................................. 60
Appendix B - Compliances ................................................................................... 64
Index....................................................................................................................... 65

Preface
Congratulations on your purchase of the SMCD3G Cable Modem Gateway. The SMCD3G
Cable Modem Gateway is the ideal all-in-one solution for the home or business environment.
SMC is proud to provide you with a powerful, yet simple communication device for
connecting your local area network (LAN) to the Internet.
This user manual contains all the information you need to install and configure your new
SMCD3G Cable Modem Gateway.
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Preface
Key Features
The following list summarizes the Gateway’s key features.
yIntegrated, CableLabs-compliant DOCSIS 1.1/ 2.0 /3.0 cable modem.
yIntegrated cable modem port for Internet connection to cable modem service.
yFour 10/100/1000 Mbps Auto-Sensing LAN ports with Auto-MDI/MDIX.
yInternet connection to cable modem service via an integrated cable modem port.
yOne USB 2.0 port.
yDynamic Host Configuration Protocol (DHCP) for dynamic IP configuration, and Domain
Name System (DNS) for domain name mapping.
yAdvanced SPI firewall Gateway for enhanced network security from attacks over the
Internet:
– Firewall protection with Stateful Packet Inspection
– Client privileges
– Hacker prevention
– Protection from denial of service (DoS) attacks
– Network Address Translation (NAT)
yEffortless plug-and-play installation.
yIntuitive graphical user interface (GUI) configuration, regardless of operating system.
yComprehensive front panel LEDs for network status and troubleshooting.
yCompatible with all popular Internet applications.
Note: Cable modems can provide maximum downstream speeds of 160 Mbps and upstream
speeds of 120 Mbps. However, the actual rate provided by your specific service provider may
vary dramatically from these maximum speeds.
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Document Organization
This document consists of four chapters and two appendixes.
yChapter 1- describes the contents in your Gateway package, system requirements, and
an overview of the Gateway’s front and rear panels.
yChapter 2- describes how to install your Gateway.
yChapter 3- describes how to configure TCP/IP settings on the computer you will use to
configure your Gateway.
yChapter 4- describes how to configure your Gateway.
yAppendix A - lists the Gateway’s specifications.
yAppendix B - contains compliance information.
Document Conventions
This document uses the following conventions to draw your attention to certain information.
Safety and Warnings
This document uses the following symbols to draw your attention to certain information.
Symbol Meaning Description
Note Notes emphasize or supplement important points of the main text.
Tip Tips provide helpful information, guidelines, or suggestions for performing tasks more
effectively.
Warning Warnings indicate that failure to take a specified action could result in damage to the
device.
Electric Shock Hazard This symbol warns users of electric shock hazard. Failure to take appropriate
precautions such as not opening or touching hazardous areas of the equipment could
result in injury or death.
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Typographic Conventions
This document also uses the following typographic conventions.
Convention Description
Bold Indicates text on a window, other than the window title, including menus, menu options, buttons, fields, and labels.
Italic Indicates avariable, which is a placeholder for actual text provided by the user or system. Angled brackets (< >)
are also used to indicate variables.
screen/code Indicates text that is displayed on screen or entered by the user.
< > angled
brackets Indicates a variable, which is a placeholder for actual text provided by the user or system. Italic font is also used to indicate variables.
[ ] square
brackets Indicates optional values.
{ } braces Indicates required or expected values.
| vertical bar Indicates that you have a choice between two or more options or arguments.

1 Getting to Know Your Gateway
Before you install your SMCD3G Cable Modem Gateway, check the package contents and
become familiar with the Gateway’s front and back panels.
The topics covered in this chapter are:
yUnpacking Package Contents (page 10)
ySystem Requirements (page 10)
yFront Panel (page 11)
yRear Panel (page 13)
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Getting to Know Your Gateway
Unpacking Package Contents
Unpack the items in your SMCD3G Cable Modem Gateway contents and confirm that no
items are missing or damaged. Your package should include:
yOne SMCD3G Cable Modem Gateway
yOne Power adapter (12V/2A)
yOne Category 5E Ethernet cable
yOne CD that contains this User Manual
If any items are missing or damaged, please contact your place of purchase. Keep the
carton, including the original packing material, in case you need to store the product or
return it.
System Requirements
To complete your installation, you will need the following items:
yProvisioned Internet access on a cable network that supports cable modem service.
yA computer with a wired network adapter with TCP/IP installed.
yA Java-enabled Web browser, such as Microsoft Internet Explorer 5.5 or above.
yMicrosoft®Windows®2000 or higher for USB driver support.
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Getting to Know Your Gateway
Front Panel
The front panel of your SMCD3G Cable Modem Gateway contains a set of light-emitting
diode (LED) indicators. These LEDs show the status of your Gateway and simplify
troubleshooting.
Figure 1 shows the front panel of the SMCD3G Cable Modem Gateway. Table 1 describes
the front panel LEDs.
Figure 1. Front Panel of the SMCD3G Cable Modem Gateway
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Getting to Know Your Gateway
Table 1. Front Panel LEDs
LED Color Description
POWER Green ON = power is supplied to the Gateway.
OFF = power is not supplied to the Gateway.
Green Blinking = scanning for DS channel.
ON = synchronized on 1 channel only.
DS
Blue ON = synchronized with more than 1 channel (DS Bond mode).
DS and US Both DS and US blinking together = operator is performing maintenance.
Green Blinking = ranging is in progress.
ON = ranging is complete on 1 channel only.
OFF = scanning for DS channel.
US
Blue ON = ranging is complete, operate with more than 1 channel (US Bond mode).
ONLINE Green Blinking =.cable interface is acquiring IP, ToD, CM configuration.
ON = Gateway is operational.
OFF = Gateway is offline.
LINK Green Blinking = data is transmitting.
ON = Gateway is operational.
OFF = no Ethernet link detected.
DIAG Amber ON = system failure.
OFF = normal operation.
Green Blinking = data is transmitting.
ON = connected at 10 or 100 Mbps.
OFF = no Ethernet link detected.
LAN 1 – LAN 4
Blue Blinking = data is transmitting.
ON = connected at 1 GMbps.
OFF = no Ethernet link detected.
USB Green Reserved for future use.
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Getting to Know Your Gateway
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Rear Panel
The rear panel of your SMCD3G Cable Modem Gateway contains a reset button and the
ports for attaching the supplied power adapter and making additional connections. Figure 2
shows the rear panel components and Table 2 describes their meanings.

Figure 2. Rear View of the SMCD3G Cable Modem Gateway
Table 2. SMCD3G Cable Modem Gateway Rear Panel Components
Item Description
Power (12VDC) Connect the supplied power adapter to this port.
LAN 1-4 Four 10/100/1000 auto-sensing RJ-45 switch ports. Connect devices on your local area network
such as a computer, hub, or switch to these ports.
USB USB 2.0 high-speed port for storing configurations externally.
Cable Connect your coaxial cable line to this port.
Reset button Use this button to reset the power or restore the default factory settings (see “Restoring Factory
Defaults,” below). This button is recessed to prevent accidental resets of your Gateway.
Restoring Factory Defaults
Using the Reset button on the back panel, you can power cycle the Gateway and return it to
its original factory default settings. As a result, any changes you made to the Gateway’s
default settings will be removed. To reset the Gateway and keep any overrides you made to
the factory default settings, use the software reset method described under “Using the
Reboot Menu to Reboot the Gateway” on page 57.
1. Leave power plugged into the Gateway.
2. Find the Reset button on the back panel, then press and hold it for at least 10 seconds.
3. Release the Reset button.




2 Installing Your Gateway
This chapter describes how to install your SMCD3G Cable Modem Gateway. The topics
covered in this chapter are:
yFinding a Suitable Location (page 15)
yConnecting to the LAN (page 15)
yConnecting the WAN (page 16)
yPowering on the Gateway (page 16)
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Installing Your Gateway
Finding a Suitable Location
Your SMCD3G Cable Modem Gateway can be installed in any location with access to the
cable network. All of the cables connect to the rear panel of the Gateway for better
organization and utility. The LED indicators on the front panel are easily visible to provide
you with information about network activity and status.
For optimum performance, the location you choose should:
yBe close to a working AC power outlet.
yAllow sufficient air flow around the Gateway to keep the device as cool as possible.
yNot expose the Gateway to a dusty or wet environment.
Connecting to the LAN
Using an Ethernet LAN cable, you can connect the Gateway to a desktop computer,
notebook, hub, or switch. Your Gateway supports auto-MDI/MDIX, so you can use either a
standard straight-through or crossover Ethernet cable.
1. Connect either end of an Ethernet cable to one of the four LAN ports on the rear panel of
the Gateway (see Figure 3).
Figure 3. Connecting to a LAN Port on the Gateway Rear Panel
2. Connect the other end of the cable to your computer’s network-interface card (NIC) or to
another network device (see Figure 4).
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Figure 4. Connecting the Gateway to the a Laptop or Desktop Computer
Connecting the WAN
To connect your Gateway to a Wide Area Network (WAN) interface:
1. Connect a coaxial cable to the port labeled Cable on the rear panel of the Gateway from a
cable port in your home or office (see Figure 2 on page 13). Use only manufactured coaxial
patch cables with F-type connectors at both ends for all connections.
2. Hand-tighten the connectors to secure the connection.
3. If the modem was not installed by your cable provider (ISP) or is replacing another cable
modem, contact your cable operator to register the SMCD3G. If the modem is not
registered with your cable operator, it will be unable to connect to the cable network
system.
Powering on the Gateway
After making your LAN and WAN connections, use the following procedure to power on the
Gateway:
1. Connect the supplied power adapter to the port labeled 12VDC on the rear panel of the
Gateway (see Figure 2 on page 13).
2. Connect the other end of the power adapter to a working power outlet. The Gateway
powers on automatically, the POWER LED on the front panel goes ON, and the other front
panel LEDs show the Gateway’s status (see Table 1 on page 12).
WARNING: Only use the power adapter supplied with the Gateway. Using a different power
adapter can damage your Gateway and void the warranty.

3 Configuring Your Computer for TCP/IP
After you install your SMCD3G Cable Modem Gateway, configure the TCP/IP settings on a
computer that will be used to configure your Gateway. This chapter describes how to
configure TCP/IP for various Microsoft Windows and Apple Macintosh operating systems.
The topics covered in this chapter are:
yConfiguring Microsoft Windows 2000 (page 18)
yConfiguring Microsoft Windows XP (page 19)
yConfiguring Microsoft Windows Vista (page 20)
yConfiguring an Apple® Macintosh® Computer (page 22)
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Configuring Your Computer for TCP/IP
Configuring Microsoft Windows 2000
Use the following procedure to configure your computer if your computer has Microsoft
Windows 2000 installed.
1. On the Windows taskbar, click Start, point to Settings, and then click Control Panel.
2. In the Control Panel window, double-click the Network and Dial-up Connections icon. If
the Ethernet adapter in your computer is installed correctly, the Local Area Connection
icon appears.
3. Double-click the Local Area Connection icon for the Ethernet adapter connected to the
Gateway. The Local Area Connection Status dialog box appears (see Figure 5).
Figure 5. Local Area Connection Status Window
4. In the Local Area Connection Status dialog box, click the Properties button. The Local
Area Connection Properties dialog box appears.
5. In the Local Area Connection Properties dialog box, verify that Internet Protocol (TCP/IP)
is checked. Then select Internet Protocol (TCP/IP) and click the Properties button.
6. Click Obtain an IP address automatically to configure your computer for DHCP.
7. Click the OK button to save this change and close the Local Area Connection Properties
dialog box.
8. Click OK button again to save these new changes.
9. Restart your computer.
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Configuring Microsoft Windows XP
Use the following procedure to configure a computer running Microsoft Windows XP with the
default interface. If you use the Classic interface, where the icons and menus resemble
previous Windows versions, perform the procedure under “Configuring Microsoft Windows
2000” on page 18.
1. On the Windows taskbar, click Start, click Control Panel, and then click Network and
Internet Connections.
2. Click the Network Connections icon.
3. Click Local Area Connection for the Ethernet adapter connected to the Gateway. The
Local Area Connection Status dialog box appears.
4. In the Local Area Connection Status dialog box, click the Properties button (see Figure 6).
The Local Area Connection Properties dialog box appears.
Figure 6. Local Area Connection Status Window
5. In the Local Area Connection Properties dialog box, verify that Internet Protocol (TCP/IP)
is checked. Then select Internet Protocol (TCP/IP) and click the Properties button. The
Internet Protocol (TCP/IP) Properties dialog box appears.
6. In the Internet Protocol (TCP/IP) Properties dialog box, click Obtain an IP address
automatically to configure your computer for DHCP. Click the OK button to save this
change and close the Internet Protocol (TCP/IP) Properties dialog box.
7. Click the OK button again to save your changes.
8. Restart your computer.
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Configuring Your Computer for TCP/IP
Configuring Microsoft Windows Vista
Use the following procedure to configure a computer running Microsoft Windows Vista with
the default interface. If you use the Classic interface, where the icons and menus resemble
previous Windows versions, perform the procedure under “Configuring Microsoft Windows
2000” on page 18.
1. On the Windows taskbar, click Start, click Control Panel, and then select Network and
Internet Icon.
2. Click View Networks Status and tasks and then click Management Networks
Connections.
3. Right-click the Local Area Connection icon and click Properties.
4. Click Continue. The Local Area Connection Properties dialog box appears.
5. In the Local Area Connection Properties dialog box, verify that Internet Protocol
(TCP/IPv4) is checked. Then select Internet Protocol (TCP/IPv4) and click the
Properties button (see Figure 7). The Internet Protocol Version 4 Properties dialog box
appears.
Figure 7. Local Area Connection Properties Window
6. In the Internet Protocol Version 4 Properties dialog box, click Obtain an IP address
automatically to configure your computer for DHCP (see Figure 8).
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