N600 WiFi Cable Modem Router Model C3700 User Manual January 2017 202-11276-03 350 East Plumeria Drive San Jose, CA 95134 USA
N600 WiFi Cable Modem Router Model C3700 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 Hardware Setup Unpack Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Position Your Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N600 WiFi Cable Modem Router Model C3700 Add a Network Folder on a USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Edit a Network Folder on a USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Approve USB Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safely Remove a USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N600 WiFi Cable Modem Router Model C3700 Chapter 8 Specify Internet Port Settings Set Up Port Forwarding to a Local Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Add a Custom Port Forwarding Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Edit a Port Forwarding Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Delete a Port Forwarding Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. 1 Hardware Setup This chapter covers the following topics: • Unpack Your Modem Router • Front Panel • Rear Panel • Position Your Gateway • Cable Your Modem Router For more information about the topics covered in this manual, visit the support website at http://support.netgear.com.
N600 WiFi Cable Modem Router Model C3700 Unpack Your Modem Router Your package contains the following items. Ethernet cable Modem router Power adapter Figure 1. Package contents Front Panel The modem router has status LEDs and buttons on the front. WPS button / LED WiFi On/Off button Power LED Downstream LED Upstream LED Internet LED 2.4 GHz LED 5 GHz LED Ethernet LED USB LED Figure 2.
N600 WiFi Cable Modem Router Model C3700 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. LED and button descriptions LED Description WPS button with This button lets you use WPS to join the WiFi network without typing the WiFi password. LED The WPS LED blinks during this process and then lights solid.
N600 WiFi Cable Modem Router Model C3700 Rear Panel The rear panel has the connections and buttons shown the following figure. USB port (optional) Ethernet LAN ports Coaxial cable connector Power adapter input Power On/Off button Figure 3. Modem router rear panel Position Your Gateway The modem router lets you access your network anywhere within the operating range of your wireless network.
N600 WiFi Cable Modem Router Model C3700 • Make sure that the modem router is within reach of an AC power outlet and near Ethernet cables for wired computers. • Place the modem router in an elevated location, minimizing the number walls and ceilings between the modem router and your other devices. • Place the modem router away from electrical devices such as these: • • - Ceiling fans - Home security systems - Microwaves - Computers - Base of a cordless phone - 2.
N600 WiFi Cable Modem Router Model C3700 Cable the Modem Router with a Simple Network The modem router comes configured to work as both a modem and a router. You can share your Internet connection without connecting the modem router to a router or gateway. Coaxial cable Power adapter Power On/Off button Modem router Figure 4. Modem router simple network To cable your modem router: 1. Connect a coaxial cable.
N600 WiFi Cable Modem Router Model C3700 To cable your modem router to a gateway or router: 1. Connect a coaxial cable. Use the coaxial cable that your cable company provides to connect the cable port on the modem router to a cable wall outlet or a line splitter. Note: If Charter is your cable Internet service provider (ISP), Charter recommends connecting your modem router directly to a cable wall outlet. If you must use a splitter, use a splitter that is rated at 3.5 dBmv. 2.
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N600 WiFi Cable Modem Router Model C3700 Connect to the Network You can connect to the modem router’s network through a wired or WiFi connection. If you set up your computer to use a static IP address, change the settings so that it uses Dynamic Host Configuration Protocol (DHCP). Wired Connection You can connect your computer to the modem router using an Ethernet cable and join the modem router’s local area network (LAN). To connect your computer to the modem router with an Ethernet cable: 1.
N600 WiFi Cable Modem Router Model C3700 Label The label on the modem router shows the login information, MAC address, and serial number. Figure 5. Modem router label Types of Logins Separate types of logins have different purposes. It is important that you understand the difference so that you know which login to use when. Types of logins: • ISP login. The login that your ISP gave you logs you in to your Internet service.
N600 WiFi Cable Modem Router Model C3700 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays.
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N600 WiFi Cable Modem Router Model C3700 Notify Your Internet Service Provider You must contact your Internet service provider (ISP) and tell them that you are using the modem router. To set up your Internet connection: 1. Contact your cable ISP and inform them that you are installing a new modem router that you bought from a retail store. Provide your cable ISP with the modem router’s model number, which is C3700. Note: The modem router is certified by all major cable ISPs.
N600 WiFi Cable Modem Router Model C3700 2. When asked, provide the modem router’s serial number and MAC address on the product label. 3. Wait for your cable ISP to confirm that your modem router is active. 4.
N600 WiFi Cable Modem Router Model C3700 5. Enter an number in the Starting Frequency field. 6. Click the Apply button. View Modem Router Initialization You can track the initialization procedure of the modem router, and get details about the downstream and upstream cable channel. The time is displayed after the modem router is initialized.
N600 WiFi Cable Modem Router Model C3700 The Downstream Bonded Channels section displays the status of each channel.
N600 WiFi Cable Modem Router Model C3700 Specify the Internet Connection Settings You can view or change the modem router’s Internet connection settings. To specify the Internet connection settings: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password.
N600 WiFi Cable Modem Router Model C3700 8. For the Domain Name Server (DNS) Address setting, select one of the following radio buttons: • Get Automatically from ISP. Your ISP uses DHCP to assign your DNS servers. Your ISP automatically assigns this address. • Use These DNS Servers. If you know that your ISP requires specific servers, select this option. Enter the IP address of your ISP’s primary DNS server. If a secondary DNS server address is available, enter it also. 9. Click the Apply button.
4. Control Access to the Internet 4 This chapter explains how to prevent objectionable content from reaching the computers and other devices that are connected to your network.
N600 WiFi Cable Modem Router Model C3700 Set Up Parental Controls The first time that you select Parental Controls from the BASIC Home screen, your browser goes to the Live Parental Controls website, where you can learn more about Live Parental Controls and download the application. To set up Live Parental Controls: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3.
N600 WiFi Cable Modem Router Model C3700 After installation, Live Parental Controls automatically starts. 7. Click the Next button. 8. Read the note, and click the Next button again to proceed. Because Live Parental Controls uses free OpenDNS accounts, you are prompted to log in or create a free account. 9. Select the radio button that applies to you: • If you already have an OpenDNS account, leave the Yes radio button selected. • If you do not have an OpenDNS account, select the No radio button. 10.
N600 WiFi Cable Modem Router Model C3700 11. Complete the fields and click the Next button. After you log on or create your account, the filtering level screen displays: 12. Select a radio button for a filtering level and click the Next button. 13. Click the Take me to the status screen button. Parental controls are now set up for the modem router. The modem router BASIC Home screen shows Parental Controls as Enabled.
N600 WiFi Cable Modem Router Model C3700 The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Security > Block Sites. 5. Select one of the keyword blocking options: • Per Schedule. Turn on keyword blocking according to the Schedule screen settings. (See Schedule When to Block Internet Sites and Services on page 30.) • Always. Turn on keyword blocking all the time, independent of the Schedule screen.
N600 WiFi Cable Modem Router Model C3700 The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Security > Block Sites. 5. Do one of the following: • To delete a single word, select it and click the Delete Keyword button. The keyword is removed from the list. • To delete all keywords on the list, click the Clear List button. All keywords are removed from the list. 6. Click the Apply button.
N600 WiFi Cable Modem Router Model C3700 • To block the services all the time, select the Always radio button. • To block the services based on a schedule, select the Per Schedule radio button. To specify the schedule, see Schedule When to Block Internet Sites and Services on page 30. 6. Click the Add button. 7. To add a service that is in the Service Type list, select the application or service. The settings for this service automatically display in the fields. 8.
N600 WiFi Cable Modem Router Model C3700 Schedule When to Block Internet Sites and Services When you schedule blocking, the same schedule is used to block sites and to block services. For information about how to specify what you want the modem router to block, see Use Keywords to Block Internet Sites on page 26 and Block Services from the Internet on page 28. To schedule blocking: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.
N600 WiFi Cable Modem Router Model C3700 A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Security > Block Sites. 5. Scroll down and select the Allow trusted IP address to visit blocked sites check box. 6. In the Trusted IP Address field, enter the IP address of the trusted computer. 7. Click the Apply button.
N600 WiFi Cable Modem Router Model C3700 4. Select ADVANCED > Security > E-mail. 5. Select the Turn E-mail Notification On check box. 6. In the Your Outgoing Mail Server field, enter the name of your ISP outgoing (SMTP) mail server (such as mail.myISP.com). You might be able to find this information in the configuration screen of your email program. If you leave this field blank, log and alert messages are not sent. 7.
5. Share a USB Drive Attached to the Modem Router 5 This chapter describes how to access and configure a USB storage drive attached to your modem router. The USB port on the modem router can be used only to connect USB storage devices like flash drives or hard drives, or a printer. Do not connect computers, USB modems, CD drives, or DVD drives to the modem router USB port.
N600 WiFi Cable Modem Router Model C3700 USB Drive Requirements The modem router works with most USB-compliant external flash and hard drives. For the most up-to-date list of USB drives that the modem router supports, visit http://kbserver.netgear.com/readyshare. Some USB external hard drives and flash drives require you to load the drivers onto the computer before the computer can access the USB device. Such USB devices do not work with the modem router.
N600 WiFi Cable Modem Router Model C3700 To map the USB device to a Windows network drive: 1. Visit www.netgear.com/readyshare. 2. In the ReadySHARE USB Storage Access pane, click PC Utility. The readyshareconnect.exe file is downloaded to your computer. 3. Launch readyshareconnect.exe. 4. Select the drive letter to map to the network folder. 5. (Optional) If you want to connect to the USB drive as a different user, select the Connect using different credentials check box. a.
N600 WiFi Cable Modem Router Model C3700 4. Select ADVANCED > USB Storage > Advanced Settings. 5. Specify access to the USB storage device: • Network Device Name. This is the name used to access the USB device connected to the modem router. The default is readyshare. • Workgroup. If you are using a Windows workgroup rather than a domain, the workgroup name is displayed here. The name works only in an operating system that supports NetBIOS, such as Microsoft Windows. • Access Method.
N600 WiFi Cable Modem Router Model C3700 Use FTP Within the Network File Transfer Protocol (FTP) lets you send and receive large files faster. To set up FTP access: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive.
N600 WiFi Cable Modem Router Model C3700 View or Change Network Folders on a USB Drive You can view or change the network folders on the USB storage device To view or change network folders: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password.
N600 WiFi Cable Modem Router Model C3700 • Volume Name. Volume name from the storage device (either USB drive or HDD). • Total Space and Free Space. Show the current utilization of the storage device. Add a Network Folder on a USB Drive You can add network folders on the USB storage device. To add a network folder: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3.
N600 WiFi Cable Modem Router Model C3700 Edit a Network Folder on a USB Drive You can add network folders on the USB storage device. To edit a network folder: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive.
N600 WiFi Cable Modem Router Model C3700 4. Select ADVANCED > Advanced Setup > USB Settings. By default Enable any USB Device connection to the USB port radio is selected. This setting lets you connect and access all your USB drives. 5. Select the No radio button. 6. Click the Approved Devices button. The approved and available USB devices display. 7. In the Available USB Devices list, select the drive that you want to approve. 8. Click the Add button. 9. Select the Allow only approved devices check box.
N600 WiFi Cable Modem Router Model C3700 Safely Remove a USB Drive Before you physically disconnect a USB drive from the modem router USB port, log in to the modem router and take the drive offline. To remove a USB disk drive safely: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin.
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N600 WiFi Cable Modem Router Model C3700 View or Change the WAN Settings You can view the wide area network (WAN) settings for the Internet port. You can set up a DMZ (demilitarized zone) server, change the maximum transmit unit (MTU) size, and enable the modem router to respond to a ping to its WAN (Internet) port. To view or change the WAN settings: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1.
N600 WiFi Cable Modem Router Model C3700 • Disable IGMP Proxying. IGMP proxying allows a computer on the local area network (LAN) to receive the multicast traffic it is interested in from the Internet. If you do not need this feature, you can select this check box to disable it. • MTU Size (in bytes). The normal MTU (maximum transmit unit) value for most Ethernet networks is 1500 bytes, or 1492 bytes for PPPoE connections. Change the MTU only if you are sure that it is necessary for your ISP connection.
N600 WiFi Cable Modem Router Model C3700 To change the MTU size: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Setup > WAN Setup. 5.
N600 WiFi Cable Modem Router Model C3700 Table 2. Common MTU sizes (continued) MTU Application 1400 Maximum size for AOL DSL. 576 Typical value to connect to dial-up ISPs. Set Up a Default DMZ Server The default DMZ server feature is helpful when you are using some online games and videoconferencing applications that are incompatible with Network Address Translation (NAT).
N600 WiFi Cable Modem Router Model C3700 7. Click the Apply button. Your change takes effect. Change the Modem Router’s Device Name The modem router’s device name is C3700. This device name displays in file manager when you browse your network. To change the modem router’s device name: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3.
N600 WiFi Cable Modem Router Model C3700 Change the LAN TCP/IP Settings The modem router is preconfigured to use private IP addresses on the LAN side and to act as a DHCP server. The modem router’s default LAN IP configuration is as follows: • LAN IP address. 192.168.0.1 • Subnet mask. 255.255.255.0 These addresses are part of the designated private address range for use in private networks and are suitable for most applications.
N600 WiFi Cable Modem Router Model C3700 The IP address and subnet mask identify which addresses are local to a specific device and which must be reached through a gateway or modem router. 7. Click the Apply button. Your changes are saved. If you changed the LAN IP address of the modem router, you are disconnected when this change takes effect. To reconnect, close your browser, relaunch it, and log in to the modem router.
N600 WiFi Cable Modem Router Model C3700 4. Select ADVANCED > Setup > LAN Setup. 5. Specify the range of IP addresses that the modem router assigns: a. In the Starting IP Address field, type the lowest number in the range. This IP address must be in the same subnet as the modem router. b. In the Ending IP Address field, type the number at the end of the range of IP addresses. This IP address must be in the same subnet as the modem router. 6. Click the Apply button. Your settings are saved.
N600 WiFi Cable Modem Router Model C3700 A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Setup > LAN Setup. 5. In the Address Reservation section of the screen, click the Add button. 6. In the IP Address field, type the IP address to assign to the computer or server.
N600 WiFi Cable Modem Router Model C3700 To delete a reserved address entry: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Setup > LAN Setup. 5.
N600 WiFi Cable Modem Router Model C3700 The WPS process automatically sets up your wireless computer with the network password when it connects. The modem router WPS screen displays a confirmation message. Specify Basic WiFi Settings The modem router comes with preset security. This means that the WiFi network name (SSID), network key (password), and security option (encryption protocol) are preset in the factory. You can find the preset SSID and password on the modem router label.
N600 WiFi Cable Modem Router Model C3700 4. Select Wireless. 5. In the Region list, select your region. In some locations, you cannot change this setting. 6. To turn off the wireless radios, scroll down and clear the Enable Wireless Gateway radio check box. If you clear this check box, you cannot use WiFi to connect to the modem router. 7. To control the SSID broadcast, select or clear the Enable SSID Broadcast check box.
N600 WiFi Cable Modem Router Model C3700 If you connected wirelessly to the network and you changed the SSID, you are disconnected from the network. 12. Make sure that you can connect wirelessly to the network with its new settings. If you cannot connect wirelessly, check the following: • Is your computer or wireless device connected to another wireless network in your area? Some wireless devices automatically connect to the first open network without wireless security that they discover.
N600 WiFi Cable Modem Router Model C3700 7. Write down the new password and keep it in a secure place for future reference. 8. Click the Apply button. Your changes are saved. Set Up a WiFi Guest Network A guest network allows visitors at your home to use the Internet without using your wireless security key. You can add a guest network to each wireless network: 2.4 GHz b/g/n and 5.0 GHz a/n. To set up a guest network: 1.
N600 WiFi Cable Modem Router Model C3700 • Allow guest to see each other and access my local network. If this check box is selected, anyone who connects to this SSID has access to your local network, not just Internet access. 6. Give the guest network a name. The guest network name is case-sensitive and can be up to 32 characters. You then manually configure the wireless devices in your network to use the guest network name in addition to the main SSID. 7. Select a radio button for a security option.
N600 WiFi Cable Modem Router Model C3700 To enable or disable the wireless radios: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Advanced Setup > Wireless Settings. 5.
N600 WiFi Cable Modem Router Model C3700 A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Advanced Setup > Wireless Settings. The Router’s PIN field displays the PIN that you use on a registrar (for example, from the Network Explorer on a Vista Windows computer) to configure the modem router’s wireless settings through WPS.
N600 WiFi Cable Modem Router Model C3700 4. Select ADVANCED > Advanced Setup > Wireless Settings. 5. Click the Set Up Access List button. 6. Select the Turn Access Control On check box. 7. Click the Set Up Access List button. The Wireless Card Access List screen displays. 8. In the Network Profiles (2.4 GHz b/g/n) list, select the radio button for the SSID (WiFi network) that you want to use the access list for. 9.
N600 WiFi Cable Modem Router Model C3700 11. To add a device from the Available Wireless Cards list, do the following: a. Select the device. b. Click the Add button. The device displays in the wireless card access list. 12. To add a computer or device that is not in the list, do the following: a. Type a name in the Device Name field. b. Type the MAC address in the MAC Address field. The MAC address is found on the computer or device. c. Click the Add button.
N600 WiFi Cable Modem Router Model C3700 The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Advanced Setup > Dynamic DNS. 5. Register for an account with one of the Dynamic DNS service providers whose URLs display in the Service Provider list. 6. Select the Use a Dynamic DNS Service check box. 7. Select the URL for your Dynamic DNS service provider.
N600 WiFi Cable Modem Router Model C3700 A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Advanced Setup > UPnP. 5. Select the Turn UPnP On check box. By default, this check box is selected.
7. Manage Your Network 7 This chapter describes the modem router settings for administering and maintaining your modem router and home network.
N600 WiFi Cable Modem Router Model C3700 View Modem Router Status To view modem router status and usage information: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED.
N600 WiFi Cable Modem Router Model C3700 The BASIC Home screen displays. 4. Select ADVANCED. The Cable Information pane displays the following: • Hardware Version. The modem router model. • Firmware Version. The version of the modem router firmware. It changes if you upgrade the modem router firmware. • Cable Modem Serial Number. The serial number of the cable modem. • CM Certificate. The status of the cable modem certificate.
N600 WiFi Cable Modem Router Model C3700 • Domain Name Server. The IP address of the Domain Name Server. Wireless Settings To view wireless settings: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive.
N600 WiFi Cable Modem Router Model C3700 Reboot the Modem Router Rebooting the modem router disconnects all computers and mobile devices from the modem router’s network. To reboot the modem router: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password.
N600 WiFi Cable Modem Router Model C3700 Change the Router Mode By default, the modem router is in router mode. This means that it works both as a modem and as a router. You can share the Internet connection without using another router or gateway. If you want to connect a gateway or router to the modem router, you must log in to the modem router and change its Router Mode setting. To change the router mode: 1. On your computer or wireless device, find and select the modem router WiFi network.
N600 WiFi Cable Modem Router Model C3700 View Logs of Modem Router Activity The log is a detailed record of the websites you have accessed or attempted to access. Up to 256 entries are stored in the log. Log entries display only when keyword blocking is enabled. No log entries are made for the trusted LAN client. To view logs: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3.
N600 WiFi Cable Modem Router Model C3700 5. To customize the log, clear or select the following check boxes: • Attempted access to allowed sites • Attempted access to blocked sites and services • Connections to the Web-based interface of this Gateway • Gateway operation (startup, get time etc.) • Known DoS attacks and Port Scans • Port Forwarding/Port Triggering 6. To save your changes, click the Apply button. 7. To refresh the log screen, click the Refresh button. 8.
N600 WiFi Cable Modem Router Model C3700 Manage the Modem Router Configuration File The configuration settings of the modem router are stored within the modem router in a configuration file. You can back up (save) this file to your computer, restore it, or reset it to the factory default settings. Back Up Settings To back up the modem router’s configuration settings: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.
N600 WiFi Cable Modem Router Model C3700 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Administration > Backup Settings. 5. Click the Browse button to find and select the .cfg file. 6. Click the Restore button. The file is uploaded to the modem router and the modem router reboots. WARNING: Do not interrupt the reboot process.
N600 WiFi Cable Modem Router Model C3700 Change the admin Password You can the default password that is used to log in to the modem router with the user name admin. This password is not the one that you use for WiFi access. The label on your modem router shows your unique wireless network name (SSID) and password for wireless access. To set the password for the user name admin: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.
N600 WiFi Cable Modem Router Model C3700 The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Administration > Event Log. The log screen shows the following information: • Time. The time the event log entry was recorded. • Priority. The severity for this event log entry. • Description. A description of this event log entry. 5. To refresh the log screen, click the Refresh button. 6.
N600 WiFi Cable Modem Router Model C3700 The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Administration > Diagnostics. In the Utility list, Ping is selected by default. 5. Specify the following parameters for the ping utility: • Target. The IP address of the ping target computer. • Ping Size. The size (in bytes) of the ping packet. • No. of Pings.
N600 WiFi Cable Modem Router Model C3700 The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Administration > Diagnostics. 5. In the Utility list, select Traceroute. 6. 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.
N600 WiFi Cable Modem Router Model C3700 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Administration > Wireless AP. On this screen, you can view wireless access points in use in your area. View or Change the Modem Router Wireless Channel To view or change your wireless channel: 1.
N600 WiFi Cable Modem Router Model C3700 4. Select ADVANCED > Administration > Wireless Channel. The screen displays wireless channels in use in the 2.4 GHz WiFi band. Your network is shown in blue. Yellow shows other networks in your area. Many countries and geographic locations have laws or guidelines about which channels can be used. Depending on your location, some channels might not be available.
N600 WiFi Cable Modem Router Model C3700 To set up remote management: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4. Select ADVANCED > Advanced Setup > Remote Management. 5.
N600 WiFi Cable Modem Router Model C3700 Your changes take effect. To use remote access: 1. Launch a web browser on a computer that is not on your home network. 2. Type your modem router’s WAN IP address into your browser’s address or location field followed by a colon (:) and the custom port number. For example, if your external address is 134.177.0.123 and you use port number 8080, enter http://134.177.0.123:8080 in your browser.
8. Specify Internet Port Settings 8 You can use port forwarding and port triggering to set up rules for Internet traffic. You need networking knowledge to set up these features.
N600 WiFi Cable Modem Router Model C3700 Set Up Port Forwarding to a Local Server If you have a server in your home network, you can allow certain types of incoming traffic to reach the server. For example, you might want to make a local web server, FTP server, or game server visible and available to the Internet. The modem router can forward incoming traffic with specific protocols to computers on your local network.
N600 WiFi Cable Modem Router Model C3700 If the service that you want to add is not in the list, create a custom service. See Add a Custom Port Forwarding Service on page 85. 9. In the Server IP Address field, enter the IP address of the computer that will provide the service. 10. Click the Add button. The service displays in the list. Add a Custom Port Forwarding Service To add a custom service: 1. Find out which port number or range of numbers the application uses.
N600 WiFi Cable Modem Router Model C3700 If the application uses a range of ports, enter the ending port number of the range in the External Ending Port field. 11. Type the port numbers in the Internal Starting Port and Internal Ending Port fields. 12. Type the IP address in the Internal IP address field or select the radio button for an attached device listed in the table. 13. Click the Apply button. The service is now in the list on the Port Forwarding/Port Triggering screen.
N600 WiFi Cable Modem Router Model C3700 Delete a Port Forwarding Entry To delete a port forwarding entry: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4.
N600 WiFi Cable Modem Router Model C3700 How the Modem Router Implements the Port Forwarding Rule The following sequence shows the effects of a port forwarding rule: 1. When you type the URL www.example.com in your browser, the browser sends a web page request message with the following destination information: • Destination address. The IP address of www.example.com, which is the address of your modem router. • Destination port number. 80, which is the standard port number for a web server process. 2.
N600 WiFi Cable Modem Router Model C3700 Add a Port Triggering Service To add a port triggering service: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login screen displays. 3. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays. 4.
N600 WiFi Cable Modem Router Model C3700 8. In the Service User list, select Any, or select Single address and enter the IP address of one computer: • Any (the default) allows any computer on the Internet to use this service. • Single address restricts the service to a particular computer. 9. Select the service type, either TCP or UDP or TCP/UDP (both). If you are not sure, select TCP/UDP. 10. In the Triggering Port field, enter the number of the outbound traffic port that will open the inbound ports.
N600 WiFi Cable Modem Router Model C3700 5. Select the Port Triggering radio button. 6. Select a radio button to specify when you want to use port triggering: • Never. The modem router does not use port triggering even if you have specified port triggering settings. • Per Schedule. Port triggering is used based on the settings in the Schedule screen. • Always. Always use port triggering. 7. In the Port Triggering Timeout field, enter a value up to 9999 minutes.
N600 WiFi Cable Modem Router Model C3700 4. Noting your port triggering rule and observing the destination port number of 6667, your modem router creates another session entry to send any incoming port 113 traffic to your computer. 5. The IRC server sends a return message to your modem router using the NAT-assigned source port (for example, port 33333) as the destination port. The IRC server also sends an “identify” message to your modem router with destination port 113. 6.
9. 9 Troubleshooting This chapter gives information about troubleshooting your modem router. This chapter includes the following sections: • Use LEDs to Troubleshoot • Cannot Log In to the Modem Router • Cannot Log In to the Modem Router • Troubleshoot a TCP/IP Network Using a Ping Utility Tip: NETGEAR provides helpful articles, documentation, and the latest software updates at support.netgear.com.
N600 WiFi Cable Modem Router Model C3700 Use LEDs to Troubleshoot The following table provides help when using the LEDs for troubleshooting. Table 3. LED troubleshooting LED Behavior Action All LEDS are off when the modem router is plugged in. Make sure that the power cord is properly connected to your modem router and that the power adapter is properly connected to a functioning power outlet. Check that you are using the 12 VDC power adapter from NETGEAR for this product.
N600 WiFi Cable Modem Router Model C3700 Note: If the IP address of your computer is shown as 169.254.x.x: Recent versions of Windows and Mac OS generate and assign an IP address when the computer cannot reach a DHCP server. These autogenerated addresses are in the range of 169.254.x.x. If your IP address is in this range, check the connection from the computer to the modem router and reboot your computer.
N600 WiFi Cable Modem Router Model C3700 Use PIng to Test the LAN Path to Your Gateway 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. In the field that is provided, type ping and then the IP address of the modem router, as in this example: ping 192.168.0.1 3. Click OK.
N600 WiFi Cable Modem Router Model C3700 If the path is working, you see this message: Reply from < IP address >: bytes=32 time=NN ms TTL=xxx 2. If you do not receive this reply, do the following: • Check that the Internet LED is lit. • If your ISP assigned a host name to your computer, enter that host name as the account name in the Internet Setup screen. • Check that your computer has the IP address of your modem router is listed as the default gateway.
A. Supplemental Information This appendix includes the following sections.
N600 WiFi Cable Modem Router Model C3700 Factory Default Settings You can return the modem router to its factory default settings. To restore the factory default settings: 1. Locate the small hole in the bottom of the modem router. The reset button is located inside this hole. 2. Use a paperclip or sharp object to press and hold the Reset button for over seven seconds. Designed by NETGEAR in California The modem router resets and returns to the factory settings shown in the following table.
N600 WiFi Cable Modem Router Model C3700 Factory Default Settings (continued) Wireless Wireless communication Enabled SSID name As shown on the product label Security WPA/WPA2. The default WPA/WPA2 passphrase is on the product label.
N600 WiFi Cable Modem Router Model C3700 Table 4. Technical specifications Technical Specifications (continued) Interface Local: 10BASE-T, 100/1000BASE-Tx, RJ-45 802.11a/n/g/b Internet: DOCSIS 3.0. Downward compatible with DOCSIS 2.0, 1.1 and 1.
