N450 WiFi Cable Modem Router Model N450/CG3000Dv2 User Manual April 2014 202-11338-02 350 East Plumeria Drive San Jose, CA 95134 USA
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Support Thank you for selecting NETGEAR products. After installing your device, locate the serial number on the label of your product and use it to register your product at https://my.netgear.com. You must register your product before you can use NETGEAR telephone support. NETGEAR recommends registering your product through the NETGEAR website. For product updates and web support, visit http://support.netgear.com. Phone (US & Canada only): 1-888-NETGEAR.
Contents Chapter 1 Connecting to the Internet Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 IP Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Port Forwarding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Port Triggering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DMZ Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Connecting to the Internet 1 This chapter covers the following sections: • Unpack Your Modem Router • Hardware Features • Label • Position Your Modem Router • Cable Your Modem Router • Connect Computer to the Modem Router • Log In to Your Modem Router • View Basic Settings • Notify Your Internet Service Provider For more information about the topics covered in this manual, visit the support website at http://support.netgear.com.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Unpack Your Modem Router Open the box and remove the modem router, ethernet cable, power adapter, and installation guide, Ethernet cable Power adapter Modem router Figure 1.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Front Panel The router front panel has the following status LEDs and buttons: WPS LED Wireless LED USB port Power LED Downstream LED Upstream LED Internet LED LAN LEDs Figure 2. Modem router front view You can use the LEDs to verify status and connections. The following table lists and describes each LED and button on the front panel of the modem router. Table 1. LEDs and buttons LED Description Power Downstream • • • • Solid green.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Table 1. LEDs and buttons LED Description Upstream Internet LAN Wireless On/Off • • • • Solid blue. More than one upstream channel is locked. Solid green. One upstream channel is locked. Blinking green. The unit is ranging on the upstream. Off. No downstream channel is locked. • • • • Solid green. The modem router is connected to the Internet. Slow blink. The modem router is receiving DHCP information. Fast blink.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Back Panel The back panel has the following ports, button, and connector: LAN ports USB port Reset button Coaxial cable connector Power adapter input Figure 3. Modem router rear panel The rear panel includes the following connectors and button, viewed from top to bottom: • Four Gigabit LAN ports. To connect local computers, use these ports. • USB port. To connect a USB hard drive or flash drive, use this port. • Reset.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Label The label on the modem router shows the router’s WiFi network name (SSID), password, serial number, and MAC address. Serial number WiFi network name (SSID) MAC address Password (key) Figure 4. Label For information about the Restore Factory Settings button and the factory setting values, see Factory Default Settings on page 86.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • Home security systems • Microwaves • Computers • Base of a cordless phone • 2.4 GHz cordless phone 5. Place the modem router away from large metal surfaces, large glass surfaces, and insulated walls such as these: • Solid metal door • Aluminum studs • Fish tanks • Mirrors • Brick • Concrete Cable Your Modem Router The following figure shows how to cable your modem router: Computer Outlet Power adapter Modem router Figure 5.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Note: If Charter is your cable Internet service provider, Charter recommends connecting your modem router directly to an outlet. If you must use a splitter, use a splitter that is rated at 3.5 dBmv. 7. Connect the power adapter to the modem router. 8. Plug the other end of the power adapter into an electrical outlet. 9. Wait about 50 seconds for the modem router to start.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 4. Within two minutes, on your computer or mobile device, press its WPS button or follow its instructions for WPS connections. Your computer or mobile device connects to the WiFi network. To find and select the WiFi network: 1. Make sure that the modem router has power (its Power LED is lit). 2. On your computer or mobile device, find and select the WiFi network. The WiFi network name is on the modem router’s label. 3.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The modem router main menu displays. View Basic Settings You can view or change the Internet settings for the modem router. To view or configure basic settings: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 3. From the main menu, select Basic Settings. The Basic Settings screen displays: 4. If your Internet service provider requires a domain name, enter the domain name in the Domain Name field. 5. Enter the device name in the Device Name field. This name is a user-friendly name representing the modem router in the network computers running Windows Vista and the Network Explorer on all other Windows computers. 6. Click the Apply button. Your changes are saved.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 You can also visit your cable ISP’s website and follow the onscreen instructions to set up your Internet service. Cable ISP Contact Information Cablevision www.cablevision.com www.optimum.com/contactus.jsp Charter 1-888-438-2427 https://install.charter.com/ Comcast 1-800-COMCAST (1-800-266-2278) https://www.comcast.com/activate/ Cox 1-877-891-2899 ww2.cox.com Optimum http://play.optimum.net https://www.optimum.
2. Configuring Your Wireless Network This chapter covers the following sections: • Set Up Your Wireless Network • Set Up Wi-Fi Multimedia • Change the Password Note: Before changing wireless settings, connect the modem router and set up its Internet connection as described in the N450 WiFi Cable Modem Router N450/CG3000Dv2 Installation Guide.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Set Up Your Wireless Network To set up the wireless network, you can enter the wireless settings manually, or you can use Wi-Fi Protected Setup (WPS). To wirelessly connect to the modem router, a computer or wireless device must be configured with the same wireless settings as the modem router. Configure Wireless Settings Manually You can manually configure the wireless settings and security in the Wireless Settings screen.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 5. Specify the Wireless Network settings for your network: • Name (SSID). The name of the wireless network. The default wireless network name (SSID) for the modem router appears on the label of the modem router. You can enter a different name here for better wireless security and to make it easier to recognize your network when you want to connect to it wirelessly. • Region. The location where the modem router operates.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Note: Configure your wireless computers with the same WPA2 or WPA settings as your modem router so that you can connect. b. Depending on the WPA setting that you select, enter the required information. For WPA-PSK or WPA2-PSK, enter the pre-shared key, which is a password between 8 and 63 characters. The default WPA password appears on the label of your modem router.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Add a Client Using the WPS Button Note: The first time you use WPS, it assigns a random network name (SSID) and a random password to your wireless network. If you want to keep the network name and password you specified in the Wireless Settings screen, you must select the Keep Existing Settings check box in the Advanced Wireless Settings screen. See Advanced Wireless Settings on page 52.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 5. Click the Next button. The following screen displays: 6. Either click the WPS button the modem router. on the screen, or press the WPS button on the front of The following occurs: • The WPS LED on the front of the modem router begins to blink. • The modem router tries to communicate with the wireless computer or device for two minutes.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The modem router’s Internet LED blinks, showing that the Internet connection is in use. Add a Client Using a PIN A client is a computer or mobile device that connects wirelessly to the modem router. After a device is added as a client, it can automatically connect to the modem router. To add a client to your modem router using a PIN: 1. Make sure that you know how WPS works on your computer or mobile device. If it works with WPS, it has a WPS utility.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 6. Select the PIN radio button. 7. In the Enter Client’s PIN field, type the PIN that you located in Step 1. 8. Click the Next button. The following occurs: • The WPS LED on the front of the modem router begins to blink. • The modem router tries to communicate with the wireless computer or device for four minutes.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Setup, select Wi-Fi Multimedia. The following screen displays: 4. Specify the Wi-Fi Multimedia setting for the network: • WMM Support. Select On to enable WMM. • No-Acknowledgement.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 password contains no dictionary words from any language, and is a mixture of both uppercase and lowercase letters, numbers, and symbols. Passwords can contain up to 30 characters. To change the password: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password.
3.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 View Denial of Service Attack Logs A content filter log is a detailed record of the denial of service (DoS) attacks directed at your network. You can set up email notification or you can view the logs on the modem router. To view or set up notification of attacks by email: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Type the outgoing SMTP mail server of your ISP. If you leave this field blank, the modem router does not send logs. 6. Select the E-mail Alerts Enable check box. 7. Click the Apply button. 8. Perform any of the following actions: • To refresh the display, click the Refresh button. • To send the log to the contact email address, click the E-mail Log button. • To clear the log entries from the display, click the Clear Log button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 4. Select the Keyword Blocking Enable check box. 5. In the keyword list field, enter the words you want to block. 6. Click the Add Keyword button. The keyword is added to the Keyword List. 7. Click the Apply button. Keyword blocking takes effect. To allow a keyword that was previously blocked: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Content Filtering, select Block Sites. The Block Sites screen displays. 4. Select a keyword from the keyword list. 5. Click the Remove Keyword button. The keyword is removed from the list. 6. Click the Apply button. Your changes are saved. To block access to certain domains: 1.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 4. Select the Domain Blocking Enable check box. 5. In the domain list field, enter the domain you want to block. 6. Click the Add Domain button. The domain is added to the Domain List. 7. Click the Apply button. Domain blocking takes effect. To unblock a domain: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Content Filtering, select Block Sites. The Block Sites screen displays. 4. Select a domain name from the Domain List. 5. Click the Remove Domain button. The domain is removed from the list. 6. Click the Apply button. Your changes are saved.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 4. Select the Allow Trusted Computer to Visit Blocked Sites check box. 5. Enter the MAC address of each computer. 6. Click the Apply button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • Filer Popup Windows NAT ALG status features - RSVP - FTP - TFTP - kerb88 - NetBios - IKE - RTSP - Kerb1293 - H225 - PPTP - MSN - SIP - ICQ - IRC666x - ICQTalk - Net2Phone - IRC7000 To enable or disable specific firewall features: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Firewall features appear near the top of the screen. 4. Do one of the following: • To enable a firewall feature, select the check box next to the feature. • To disable a firewall feature, clear the check box next to the feature. 5. Click the Apply button. Your changes are saved. The following table describes the fields displayed in this screen. Feature Description Firewall • • Enable. The modem router performs stateful packet inspection (SPI).
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Content Filtering, select Services. Web features appear near the middle of the screen. 4. Do one of the following: • To enable a web feature, select the check box next to the feature.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Content Filtering, select Services. NAT ALG Status features appear near the bottom of the screen. 4. Do one of the following: • To enable a web feature, select the check box next to the feature.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2 View the Modem Router Status You can view hardware and firmware details and basic status information about the modem router. To view the modem router status: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following table describes the fields displayed in this screen: Modem Field Description Standard Specification Compliant DOCSIS 3.0 Hardware Version The hardware version of the modem router. Software Version The version of firmware currently running on the modem router. Cable MAC Address The MAC address used by the cable modem port of the modem router. This MAC address might need to be registered with your cable service provider.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The modem router main menu displays. 3. In the main menu, under Maintenance, select Connection. The following screen displays: The modem router automatically goes through the following steps in the provisioning process: • Scans and locks the downstream frequency and links back in the upstream direction. • Obtains a modem router IP address for the modem router itself. • Assigns an IP address for the connected computer. • Connects to the Internet.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 To back up the settings: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Maintenance, select Backup. The following screen displays: 4. Click the Back Up button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Maintenance, select the Back Up button. The following screen displays: 4. Click the Browse button. 5. Locate and select the previously saved backup file, then click the Restore button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 To view or clear the event log: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Maintenance, select Event Log. The following screen displays: 4.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Run the Diagnostic Utilities You can run ping and traceroute utilities. Ping Utility Ping is an administration utility that tests whether a computer on the network is reachable and measures the time it takes messages sent from the originating device to reach a destination computer and return. To run a ping test: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 5. Specify the following parameters for the ping utility: • Target. The IP address of the ping target computer. • Ping Size. The size of the ping packet. • No. of Pings. The number of times to ping the target computer. • Ping Interval. The time between pings. 6. Click the Start Test button. The ping results display: 7. To stop a ping test, click the Abort Test button. To clear the results from the display: 1.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Maintenance, select the Diagnostics button. 4. Click the Clear Results button. Traceroute Utility To display the route and measure transit delays of packets across an IP, run the traceroute utility.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 5. Specify the following parameters for the traceroute utility. • Target. The IP address or host name of the computer you are tracing. • Max Hops. The maximum number of hops to allow when tracing the route. • Data Size. The input the size of the packet. • Base Port. The port number to send the packet to. • Resolve Host. Select On to resolve the host name to the IP address. 6. Click the Start Test button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Maintenance, select Diagnostics. 4. Click the Clear Results button.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Advanced Wireless Settings You can configure the wireless radio settings and other advanced settings. To configure advanced wireless settings: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 4. Configure the settings described in the following table. Advanced Wireless Settings Description Wireless Access Point Enable By default this check box is selected so that the modem router works as a wireless access point. You can turn off the wireless radio to disable access through this device, which can be helpful for configuration, network tuning, or troubleshooting activities.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select MAC Filtering. The following screen displays: The Trusted Devices table shows computers that have access to the Internet through the modem router. 4.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • If the computer you want is not listed, click the Refresh button to update the Trusted Devices table. If the computer is still not listed, complete the Device Name and MAC Address fields. 5. Click the Add button. The Enable check box for the computer in the MAC Filter List is automatically selected. 6. To block the computer, select the days and times: • Days to Block. Select the days to block the computer selected in the MAC Filter List.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 To remove a computer from the list: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select MAC Filtering. The MAC Filtering screen displays. 4.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select IP Filtering. The following screen displays: The Trusted Devices table shows computers that are allowed access to the Internet through your modem router. 4.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • If the name of the computer you want to add does not display, you can type a name for the computer you are adding; or enter the IP address of the computer you want to block. 5. Click the Add button. The Enable check box is automatically selected. 6. Select the days to block. 7. In the Time of Day to Block section, select a start time and an end time. This time range applies to each day you selected in Day(s) to Block section for the specific computer.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 from the LAN side to the outside. You can use port blocking to add predefined or custom rules to specify exceptions to the default rule. Note: The default rule allows any outbound traffic not blocked by rules that you create. To add a custom service: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • Start Port. The start of the range of ports for the service. • End Port. The end of the range of port for the service. • Protocol. The protocol for the ports: • - TCP. TCP only. - UDP. UDP only. - Both. Both TCP and UDP. Local IP Address. The local IP address for the computer that is using the service. 6. Click the Add button. Your settings are saved. The Active Filters table now displays the list of ports that are currently blocked.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select Port Blocking. The Port Blocking screen displays. 4. Click the Reset button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 subnet as your LAN. By default, the IP addresses from 192.168.0.2 through 192.168.0.9 are reserved for this purpose. • Local computers must access the local server using the computers’ local LAN address (192.168.0.XXX, by default). Attempts by local computers to access the server using the external WAN IP address fail. • Port forwarding opens holes in your firewall. Enable only ports that are necessary.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • Name. A name for the service. • Start Port. The start port for the service. • End Port. The end port for the service. • Protocol. The protocol for the ports: • - TCP. TCP only. - UDP. UDP only. - Both. Both TCP and UDP. Local IP Address. Complete the local IP address for the computer that is using the service. 6. Perform one of these actions: • Click the Add button. The Active Forwarding Rules table displays the list of forwarded ports.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select Port Triggering. The following screen displays: 4. For each port trigger, enter the settings in the Port Triggering List: • Trigger Range.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 - Both. Both TCP and UDP. 5. Select the Enable check box for the port trigger. 6. Click the Apply button. Your changes are saved and the port trigger is activated. To remove a configured port trigger from the table: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select Port Triggering. The port triggering screen displays. 4. Click the Reset button. The trigger and target ranges return to zero. DMZ Host You can set up a default DMZ computer.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 4. Select the Respond to Ping on WAN Port check box. When you select this check box, the modem router, not the DMZ computer, responds to a ping request. For example, some systems tracking the performance of the broadband connections in terms of latency and packet loss need the modem router to reply to ping requests. 5. Type the last digits of the IP address in the DMZ Address field.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select LAN IP. The following screen displays: 4. Specify these settings: • LAN IP Address. The factory default setting is 192.168.0.1. • Subnet Mask. The network number portion of an IP address.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Reserve an IP Address for DHCP Use To reserve an IP address for DHCP use, enter the DHCP server reservation settings for the private LAN under DHCP Reservation Lease Info in the LAN IP screen. To reserve an IP address for DHCP: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select LAN IP. The LAN IP screen displays. 4. In the DHCP Client Lease Info table, select the radio button for the MAC and IP address that you want to remove. 5. Click the Delete button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select LAN Switch. The following screen displays: 4. For each port, select the appropriate speed and duplex setting. 5. Click the Apply button. Your changes are saved. To disable a LAN port: 1.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select LAN Switch. 4. In the Auto column corresponding to the port you want to disable, clear the check box. 5. Click the Apply button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The modem router main menu displays. 3. In the main menu, under Advanced, select UPnP. 4. Select the Turn UPnP On check box. By default, this check box is cleared. This prevents the modem router from allowing any devices to automatically control the resources, such as port forwarding, of the modem router. 5. Complete the Advertisement Period (in minutes) and Advertisement Time to Live (in hops) fields.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select NTP. The following screen displays: 4. Select the NTP enable check box. 5. Enter the IP server addresses: a. Enter the first server IP address in the Server IP Address 1 field. b.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 To disable NAT: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password. The user name and password are case-sensitive. The modem router main menu displays. 3. In the main menu, under Advanced, select NAT. The following screen displays: 4. Clear the Turn NAT On check box. 5. Click the Apply button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 9. Type \\192.168.0.5 in the search field. Your modem router network’s USB folder displays: Note: If two USBs are connected to the modem router, the first USB connected to the modem router is called storage0 and the second USB is called storage1. To access a USB device from a MAC computer: 1. Insert a USB drive into the USB port on the front or back of the modem router. 2.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 4. Select Go > Connect to Server. The Connect to Server screens displays. 5. Type smb://192.168.0.5 in the Server Address field. 6. Click the Connect button. 7. When prompted, select the Guest or Registered User radio button, enter your name and password, and click the Connect button.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Your modem router network’s USB folder displays: Note: If two USBs are connected to the modem router, the first USB connected to the modem router is called storage0 and the second USB is called storage1. To safely remove a USB device: 1. Type http://192.168.0.1 in the address field of your web browser. A login screen displays. 2. Enter the modem router user name and password. The default user name is admin. The default password is password.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 The following screen displays: 4. Click the Safely Remove USB Device button. You can remove your USB device from the modem router.
6. 6 Troubleshooting This chapter gives information about troubleshooting your modem router. For the common problems listed, see the section indicated: • Have I connected the modem router correctly? See Basic Functions on page 81. • I cannot access the modem router configuration with my browser. See Connect to the Modem Router’s Main Menu on page 81. • I have configured the modem router but I cannot access the Internet. See Troubleshoot the ISP Connection on page 82.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Basic Functions After you have turned on power to the modem router, do the following: 1. Check to see that the Power LED is lit. 2. Check that the numbered Ethernet LEDs light momentarily. 3. After a few seconds, check that the LEDs are lit for any local ports that are connected. The following table provides help when you are using the LEDs for troubleshooting. Table 2. LED behavior LED Behavior Action All LEDs are off when the modem router is plugged in.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 • Make sure that your computer’s IP address is on the same subnet as the modem router. If you are using the recommended addressing scheme, your computer’s address is in the range of 192.168.0.10 to 192.168.0.254. Note: If your computer’s IP address is shown as 169.254.x.x: Recent versions of Windows and Mac OS generate and assign an IP address if the computer cannot reach a DHCP server. These autogenerated addresses are in the range of 169.254.x.x.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 easily troubleshoot a TCP/IP network by using the ping utility in your computer or workstation. Test the LAN Path to Your Modem Router You can use ping to verify that the LAN path to your modem router is set up correctly. To ping the modem router from a computer running Windows 95 or later: 1. From the Windows toolbar, click the Start button and select Run. 2.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 If the path is functioning correctly, replies as in the previous section are displayed. If you do not receive replies, do the following: • Check that your computer has the IP address of your modem router listed as the default modem router. If the IP configuration of your computer is assigned by DHCP, this information is not visible in your computer’s Network Control Panel.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Factory Default Settings You can return the modem router to its factory settings. On the rear panel of the modem router, press and hold the Reset button for over seven seconds. The modem router resets and returns to the factory configuration settings shown in the following table. Table 3. Factory default settings Feature Parameter Default Modem Router login User login URL http://192.168.0.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Table 3. Factory default settings (continued) Feature Parameter Default Wireless Wireless communication Enabled SSID name Appears on the label of the modem router. Security WPA/WPA2 The default WPA/WPA2 password appears on the label of the modem router.
N450 WiFi Cable Modem Router Model N450/CG3000Dv2 Component Specification Interface Local: 10BASE-T, 100/1000BASE-Tx, RJ-45 USB 2.0/1.1 function 802.11n/g/b Internet: DOCSIS 3.0. Downward compatible with DOCSIS 2.0, 1.1, and 1.
