Page 1
D D O O C C S S I I S S 3 3 . . 0 0 W W i i r r e e l l e e s s s s C C a a b b l l e e M M o o d d e e m m FastFind Links G G e e t t t t i i n n g g t t o o K K n n o o w w Y Y o o u u r r G G a a t t e e w w a a y y S S M M C C D D 3 3 G G N N - - R R R R R R...
Disabling Proxy Settings in Firefox..............28 Disabling Proxy Settings in Safari ..............29 Disabling Firewall and Security Software ............29 Confirming Your Gateway’s Link Status.............. 29 Accessing Your Gateway’s Web Management ............30 SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 4
Using the Reboot Menu to Reboot the Gateway..........87 Viewing Status Information.................. 88 Viewing Cable Status Information ............... 90 Appendix A - Specifications .................. 91 Appendix B - Compliances ..................95 Index ........................96 SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 5
P P r r e e f f a a c c e e Congratulations on your purchase of your SMCD3GN-RRR Wireless Cable Modem Gateway. Your SMCD3GN-RRR Wireless Cable Modem Gateway is the ideal all-in-one wired and wireless 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.
Universal Plug and Play (UPnP) enables seamless configuration of attached devices Effortless plug-and-play installation Intuitive graphical user interface (GUI) configuration, regardless of operating system Comprehensive front panel LEDs for network status and troubleshooting Compatible with all popular Internet applications SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 7
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. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
[ ] square Indicates optional values. brackets { } braces Indicates required or expected values. | vertical bar Indicates that you have a choice between two or more options or arguments. viii SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
1 1 G G e e t t t t i i n n g g t t o o K K n n o o w w Y Y o o u u r r G G a a t t e e w w a a y y Before you install your SMCD3GN-RRR Wireless Cable Modem Gateway, check the package contents and become familiar with your Gateway’s front and back panels.
U U n n p p a a c c k k i i n n g g P P a a c c k k a a g g e e C C o o n n t t e e n n t t s s Your SMCD3GN-RRR package should include the following items:...
Page 11
F F r r o o n n t t P P a a n n e e l l The front panel of your SMCD3GN-RRR Wireless Cable Modem Gateway contains a set of light-emitting diode (LED) indicators. These LEDs show the status of your Gateway and simplify troubleshooting.
Page 12
ON = connected at 1 GMbps. OFF = no Ethernet link detected. WIFI Green Blinking = data is transmitting. ON = Wi-Fi is enabled. OFF = Wi-Fi is disabled. Green Reserved for future use. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 13
R R e e a a r r P P a a n n e e l l The rear panel of your SMCD3GN-RRR Wireless Cable Modem Gateway contains a reset button and the ports for attaching the supplied power adapter and making additional connections.
Page 14
Gateway and return it to its original factory default settings. 1. Leave power plugged into your 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. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
2 2 I I n n s s t t a a l l l l i i n n g g Y Y o o u u r r G G a a t t e e w w a a y y This chapter describes how to install your SMCD3GN-RRR Wireless Cable Modem Gateway.
Page 16
F F i i n n d d i i n n g g a a S S u u i i t t a a b b l l e e L L o o c c a a t t i i o o n n The SMCD3GN-RRR Wireless Cable Modem Gateway can be installed in any location with access to the cable network.
Page 17
LEDs show your Gateway’s status (see Table 1 on page 12). WARNING: Only use the power cord supplied with your Gateway. Using a different power cord can damage your Gateway and void the warranty. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
3 3 C C o o n n f f i i g g u u r r i i n n g g Y Y o o u u r r C C o o m m p p u u t t e e r r f f o o r r T T C C P P / / I I P P After you install your SMCD3GN-RRR Wireless Cable Modem Gateway, configure the TCP/IP settings on a computer that will be used to configure your Gateway.
Page 19
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. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 20
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. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 21
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 SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 22
Figure 8. Internet Protocol Properties Window 7. Click the OK button to save your changes and close the dialog box. 8. Click the OK button again to save your changes. Figure 9. Local Area Connection Status Window SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 23
Figure 11. Example of Network Connections List 2. Right-click the Local Area Connection icon and click Properties. 3. In the Networking tab, click either Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6), and then click Properties. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 24
Configuring Your Computer for TCP/IP Figure 12. Local Area Network Connection Properties Dialog Box 4. In the properties dialog box, click Obtain an IP address automatically to configure your computer for DHCP (see Figure 13). SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 25
However, you should still be able to use this procedure as a guide to configuring your Apple Macintosh for TCP/IP. 1. Pull down the Apple Menu, click System Preferences, and select Network. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 26
Configuring Your Computer for TCP/IP 2. Verify that the NIC connected to your SMCD3GN-RRR is selected in the Show field. 3. In the Configure field on the TCP/IP tab, select Using DHCP (see Figure 14). 4. Click Apply Now to apply your settings and close the TCP/IP dialog box.
This chapter describes how to use a Web browser to configure your Gateway. The topics covered in this chapter are: Pre-configuration Guidelines (page 28) Accessing Your Gateway’s Web Management (page 30) Understanding the Web Management Interface Screens (page 31) Web Management Interface Menus (page 32) SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 28
3. Click the Advanced tab. 4. In the Advanced tab, click the Network tab. 5. Click the Settings button. 6. Click Direct connection to the Internet. 7. Click the OK button to confirm this change. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 29
C C o o n n f f i i r r m m i i n n g g Y Y o o u u r r G G a a t t e e w w a a y y ’ ’ s s L L i i n n k k S S t t a a t t u u s s Confirm that the LINK LED on your Gateway front panel is ON (see Figure 1 on page 11). If the LED is OFF, replace the Ethernet cable connecting your computer and Gateway. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 30
5.5 or later), you will log in to the interface to define system parameters, change password settings, view status windows to monitor network conditions, and control your Gateway and its ports. To access your SMCD3GN-RRR Wireless Cable Modem Gateway’s web-based management screens, use the following procedure. 1. Launch a Web browser.
Page 31
The bottom right side of the screen contains three buttons: Help displays online help Apply saves your configuration changes to the displayed page Cancel discards any configuration changes made to the current page SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Use encryption to protect the data transmitted across your wireless network. • Wireless > WPS Enable or disable Wi-Fi Protected Setup (WPS). • Wireless > MAC Filtering Allow all wireless client stations or only trusted PCs to connect over a wireless • connection. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 33
DHCP client PCs current connected to your Gateway. The submenu lets you: Status > Cable Status View cable initialization procedures, and cable downstream and upstream status. • SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
To access the System Settings menu, click System in the menu bar. Figure 18 shows an example of the menu and Table 4 describes the setting you can select. Figure 18. System Settings Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 35
Network Magic or any software application that discovers and manages network devices. Checked = HNAP is enabled on the Gateway. • Unchecked = HNAP is disabled on the Gateway. (default) • SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
To access the Password Settings menu, click System in the menu bar and then click the Password Settings submenu. Figure 19 shows an example of the menu and Table 5 describes the settings you can select. Figure 19. Password Settings Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 37
(!). Idle Time Out Your Web management interface sessions timeout after 10 minutes of idle time. To change this duration, enter a new timeout value. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
LAN Settings menu, click LAN in the menu bar. Figure 20 shows an example of the menu and Table 6 describes the settings you can select. Figure 20. LAN Settings Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 39
Amount of time a DHCP network user is allowed connection to your Gateway with their current dynamic IP address. Default is One Week. This option is available when Enable DHCP Server is checked. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
LAN ports on the Gateway. To access the Ether Switch Control menu, click LAN in the menu bar and then click the Ether Switch Control submenu in the menu bar. Figure 21. Ether Switch Port Control Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 41
See page 45. Queue - lets you specify whether QoS behavior runs with strict or weighted priority. See page 46. DSCP Remarking - lets you define the DSCP remarking action and mode. See page 48. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Figure 23 shows an example of the menu. Note: The Port submenu is not available in the menu bar if Enable QOS Module is not checked in the QoS Settings menu (see page 41). SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
CoS helps to keep the most important network traffic moving at an acceptable speed, regardless of current bandwidth usage. This means you can manage available bandwidth so that the switch transmits the most important traffic first. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Figure 24 shows an example of the menu. Note: The COS submenu is not available in the menu bar if Enable QOS Module is not checked in the QoS Settings menu (see page 41). Figure 24. CoS Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 45
Figure 25 shows an example of the menu. Note: The DSCP submenu is not available in the menu bar if Enable QOS Module is not checked in the QoS Settings menu (see page 41). SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Strict priority – allows delay-sensitive data such as voice to be sent before packets in other queues. Weighted priority – lets you assign each queue with a certain weight indicating the amount of guaranteed capacity, with high priority packets served before any low priority packets. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
QoS Settings menu (see page 41). Figure 26. Queue Settings Menu By default, the Gateway uses strict priority. To change to weighted priority: 1. For Queue Type, select Weighted Priority. The options in Figure 27 appear. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 48
Remarking submenu in the menu bar. Figure 28 shows an example of the menu. Note: The DSCP Remarking submenu is not available in the menu bar if Enable QOS Module is not checked in the QoS Settings menu (see page 41). SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Applications such as VoIP, video, and other time sensitive applications require a robust network treatment like expedited forwarding. When checked, the Gateway requests a remarking action if DSCP equals an expedited forwarding code point. By default, this option is not checked. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 50
When checked, lets the Gateway request a remarking action if DSCP equals a non-zero value. By default, this option is checked, but does not take effect until the OSPF Status changes to ENABLE. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
To access the Wireless Basic Settings menu, click Wireless in the menu bar. Figure 29 shows an example of the menu and Table 9 describes the settings you can select. Figure 29. Wireless Basic Settings Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 52
Select the appropriate channel from the list provided to correspond with your network settings, between 1 and 11 (in North America). Default is Auto, which selects the appropriate channel automatically. All devices in your wireless network must use the same channel to work properly. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Figure 30 shows an example of the menu and Table 10 describes the settings you can select. Note: The Encryption submenu is not available in the menu bar if wireless operation is disabled in the Wireless Basic Settings menu (see page 40). Figure 30. Wireless Encryption Settings Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 54
WEP and offers two cipher types, TKIP and AES, with dynamic encryption keys. If you select WPA-Personal, select the options in Figure 32 and Table 12. (default) Figure 31. WEP Options SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 55
8 to 63 ASCII characters. You can use upper-case, lower-case, and numeric characters to from your passphrase. A Generate Keys button next to this field lets the Gateway generate a passphrase based on the characters typed in this field. Figure 32. WPA_Personal Options SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
WPA2. The disadvantages of WPS are: Unless all the Wi-Fi devices on the network are WPS-compatible, you cannot take advantage of the ease of securing the network. Not all wireless equipment supports WPS. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 57
WPS setup. Figure 33. WPS Setup Menu If you enable WPS configuration and click Apply, the menu options in Figure 34 appear. Table 13 describes the options shown. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 58
PBC = Push Button Configuration. Allows users to use the WPS button on the front panel of the • Gateway to configuring WPS. WPS PIN If PIN was selected for WPS mode, enter the PIN that users must enter to enable WPS. The PIN must be 8 alpha-numeric characters long. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 59
Note: The MAC Filtering submenu is not available in the menu bar if wireless operation is disabled in the Wireless Basic Settings menu (see page 40). Figure 35. MAC Filtering Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Delete button. A precautionary message does not appear before deleting a wireless client station. 4. When you finish, click Apply. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
To access the Port Forwarding menu, click NAT in the menu bar and then click the Port Forwarding submenu in the menu bar. Figure 36 shows an example of the menu. Figure 36. Port Forwarding Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 62
6. To delete a predefined service, click the radio button to the left of the service you want to delete and click the Delete button. No precautionary message appears before you delete a predefined service. Figure 37. Predefined Service Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 63
End IP Enter the ending IP address in the remote IP address range. This field is unavailable if your Gateway is configured for any remote IP addresses or for a single remote IP address. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 64
6. To delete a customer-defined service, click the radio button to the left of the service you want to delete and click the Delete button. No precautionary message appears before you delete a customized service. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 65
Configuring Your Gateway Figure 38. Customer Defined Service Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 66
Numbers of the ports whose traffic your Gateway forwards to the LAN. If there is a range of ports, enter the starting private port here and check Enable Port Range. The Gateway automatically calculates the end private port. The LAN PC server listens for traffic/data on this port (or these ports). SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 67
The Security Settings (Firewall) menu also provides an option for enabling or disabling the Session Initiation Protocol (SIP) application-layer gateway service on the Gateway firewall. This option allows SIP signaling requests to traverse directly through the Gateway to the destination device. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Configuring Your Gateway Figure 39. Security Settings (Firewall) Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 69
To enable access control, check Enable Access Control if it is unchecked and click Apply. When Access Control is enabled, you can configure up to 35 predefined and customer- defined filtering tables. Figure 40. Access Control Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 70
7. To delete a predefined filter, click the radio button to the left of the filter you want to delete and click the Delete button. No precautionary message appears before you delete a predefined filter. Click Apply in the Access Control menu to save your settings. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 71
Ending IP address in the LAN IP address range to which the filter will be applied. This field is unavailable if your Gateway is configured for any LAN IP address or a single LAN IP address. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 72
7. To delete a customer-defined filter, click the radio button to the left of the filter you want to delete and click the Delete button. No precautionary message appears before you delete a customer-defined filter. Click Apply in the Access Control menu to save your settings. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 73
Configuring Your Gateway Figure 42. Customer Defined Filter Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 74
B. To display the Special Applications menu, click Firewall in the menu bar and then click the Special Application submenu. Figure 43 shows an example of the menu. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 75
If you clicked Apply, the trigger is added to the Trigger Table. 5. To configure additional triggers (up to 20), repeat steps 1 through 4. When you finish, click Apply in the Special Applications menu to save your settings. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 76
From and To port ranges for the target port listening for the special application. Interval Specify the interval between 50 and 30000 between two continuous sessions. If the interval exceeds this time interval setting, the sessions are considered to be unrelated. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Module is disabled in the Security Settings (Firewall) menu (see page 67). Tip: The Gateway provides a Schedule Rules feature that lets you configure URL blocking for certain days, if desired. For more information, see “Configuring Schedule Rules” on page 79. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 78
3. To block a site, click in the Keyword/Domain Name field, enter keyword or domain name of the site you want to block, and click Add Keyword. The keyword or domain appears in the Blocked Keyword/Domain List. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 79
Schedule Rule submenu in the menu bar. Figure 46 shows an example of the menu. Note: The Schedule Rule submenu is not available in the menu bar if Enable Firewall Module is disabled in the Security Settings (Firewall) menu (see page 67). Figure 46. Schedule Rule Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 80
The bottom area lets you define the alerting schedule. Note: The Email/Syslog Alert submenu is not available in the menu bar if Enable Firewall Module is disabled in the Security Settings (Firewall) menu (see page 67). SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 81
Configuring Your Gateway Figure 47. Email/Syslog Alert Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 82
5. To delete an email recipient, click the radio button to the left of the recipient and click Delete. No precautionary message appears before you delete the email recipient. 6. Click Apply. Figure 48. Recipient Adding Menu SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 83
To configure your Gateway to send an entry to a syslog if it detects an intrusion: 1. Perform step 1 under “Configuring Syslog Entries” on page 83. 2. Under Alert Options, check Send Syslog. 3. Click Apply. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 84
1. In the DMZ (Demilitarized Zone) menu, check Enable DMZ Host. The 2 rightmost fields next to this option become available. 2. Enter the last two octets in the IP addresses of the computer to be used as the DMZ server. 3. Click Apply. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 85
2. Click OK to reboot your Gateway or click Cancel to not reboot it. If you clicked OK, the reboot is complete when the POWER LED stops blinking and you will need to log in to the Web interface again. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
“Using the Reboot Menu to Reboot Your Gateway“ on page 85). Figure 52. Tools Settings Menu To reset the Gateway and restore its factory default settings: 1. Click Factory Reset. The warning message in Figure 53 appears. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 87
Figure 54. Reboot Menu To reboot the Gateway and retain all changes made to its factory default settings: 1. In the Reboot menu, click Apply. The precautionary message in Figure 51 appears. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 88
The Status menu appears when you first log in to the Web management interface. You can also display it by clicking Status in the menu bar. Figure 56 shows an example of the status information shown. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 89
Configuring Your Gateway Figure 56. Example of Status Page SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 90
You can also display it by clicking Status in the menu bar and then clicking the Cable Status submenu. Figure 57 shows an example of the cable status information shown. Figure 57. Example of Cable Status Page SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 91
IPv6 support coexists with IPv4 Downloadable configuration files allow for easy setup and installation. Universal Plug and Play (UPnP) enabling any UPnP devices seamlessly SAMBA for USB port connection of USB hard drives SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
N N e e t t w w o o r r k k P P r r o o t t o o c c o o l l s s IEEE 802.1d-compliant bridging DHCP Client/Server ICMP FTP/TFTP DNS Relay Telnet ToD Client SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 94
P P o o w w e e r r S S u u p p p p l l y y E E n n e e r r g g y y S S t t a a r r R R a a t t i i n n g g Level IV SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Page 95
Section 820-93 of the National Electric Code which provide guideline for proper grounding and, in particular, specify that the Coaxial cable shield shall be connected to the grounding system of the building, as close to the point of cable entry as practical. SMCD3GN-RRR Wireless Cable Modem Gateway User Manual...
Need help?
Do you have a question about the SMCD3GN-RRR and is the answer not in the manual?
Questions and answers