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C3700,N600
User Manual
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NETGEAR C3700,N600 User Manual

User Manual
N600 WiFi Cable Modem Router C3700
March 2021 202-12218-01
NETGEAR, Inc. 350 East Plumeria Drive San Jose, CA 95134, USA
Support and Community
Visit netgear.com/support to get your questions answered and access the latest downloads.
You can also check out our NETGEAR Community for helpful advice at community.netgear.com.
Customer-owned cable devices might not be compatible with certain cable networks. Check with your
cable Internet provider to confirm that this NETGEAR cable device is allowed on your cable network.
If you are experiencing trouble installing your cable device, contact NETGEAR at 1-866-874-8924.
Note to CATV system installer: This reminder is provided to call the CATV systems installer’s attention
to Section 820-93 of the National Electrical Code, which provide guidelines for proper grounding
and in particular, specify that coaxial cable shield shall be connected to the grounding system of the
building, as close to the point of cable entry as practical.
Regulatory and Legal
Si ce produit est vendu au Canada, vous pouvez accéder à ce document en français canadien à
https://www.netgear.com/support/download/.
(If this product is sold in Canada, you can access this document in Canadian French at
https://www.netgear.com/support/download/.)
For regulatory compliance information including the EU Declaration of Conformity, visit
https://www.netgear.com/about/regulatory/.
See the regulatory compliance document before connecting the power supply. For NETGEAR’s Privacy
Policy, visit https://www.netgear.com/about/privacy-policy.
By using this device, you are agreeing to NETGEAR’s Terms and Conditions at
https://www.netgear.com/about/terms-and-conditions. If you do not agree, return the device to your
place of purchase within your return period.
Trademarks
©NETGEAR, Inc. NETGEAR and the NETGEAR Logo are trademarks of NETGEAR.
User Manual2

Contents

Chapter 1 Hardware Setup
Chapter 2 Connect to the Network and Access the Modem Router
Unpack Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Position Your Gateway. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cable Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cable the Modem Router with a Simple Network . . . . . . . . . . . . . . . . . .12
Cable Your Modem Router to a Router or Gateway . . . . . . . . . . . . . . . .12
Connect to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Wired Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
WiFi Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Types of Logins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Log In to the Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 3 Specify Initial Settings
Notify Your Internet Service Provider. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Specify the Cable Connection Starting Frequency . . . . . . . . . . . . . . . . . . . . 21
View Modem Router Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Specify the Internet Connection Settings . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Chapter 4 Control Access to the Internet
Use Keywords to Block Internet Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Block Services from the Internet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Schedule When to Block Internet Sites and Services . . . . . . . . . . . . . . . . .30
Avoid Blocking on a Trusted Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Set Up Security Event Email Notifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Chapter 5 Share a USB Drive Attached to the Modem Router
USB Drive Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Access a USB Drive on the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Control Access to the USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Use FTP Within the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
View or Change Network Folders on a USB Drive . . . . . . . . . . . . . . . . . . . .38
Add a Network Folder on a USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3
Edit a Network Folder on a USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Approve USB Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Safely Remove a USB Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Chapter 6 Specify Network Settings
View or Change the WAN Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Change the MTU Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Set Up a Default DMZ Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Change the Modem Router’s Device Name . . . . . . . . . . . . . . . . . . . . . . . . .49
Change the LAN TCP/IP Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Specify the IP Addresses That the Modem Router Assigns. . . . . . . . . . . . . 51
Reserve LAN IP Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Use the WPS Wizard for WiFi Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Specify Basic WiFi Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Change the WiFi Security Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Set Up a WiFi Guest Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Control the Wireless Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Use the WiFi On/Off Button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Enable or Disable the Wireless Radios . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Specify WPS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Set Up a Wireless Card Access List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Dynamic DNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Improve Network Connections with Universal Plug and Play . . . . . . . . . . . 65
Chapter 7 Manage Your Network
View Modem Router Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
View Cable Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
View Internet Port Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Reboot the Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Change the Router Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
View Logs of Modem Router Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
View a Network Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Manage the Modem Router Configuration File . . . . . . . . . . . . . . . . . . . . . . 75
Back Up Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Restore Configuration Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Erase the Current Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . .76
Change the admin Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
View Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Run the Ping Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Run the Traceroute Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
View Wireless Access Points in Your Area . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
View or Change the Modem Router Wireless Channel . . . . . . . . . . . . . . . . 81
Remote Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
User Manual4
Chapter 8 Specify Internet Port Settings
Set Up Port Forwarding to a Local Server . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Add a Custom Port Forwarding Service . . . . . . . . . . . . . . . . . . . . . . . . . .87
Edit a Port Forwarding Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Delete a Port Forwarding Entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Application Example: Make a Local Web Server Public . . . . . . . . . . . . .89
How the Modem Router Implements the Port Forwarding Rule . . . . . .90
Set Up Port Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Add a Port Triggering Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Specify When to Use Port Triggering. . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Application Example: Port Triggering for Internet Relay Chat . . . . . . .93
Chapter 9 Troubleshooting
Use LEDs to Troubleshoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Cannot Log In to the Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Troubleshoot the ISP Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Troubleshoot a TCP/IP Network Using a Ping Utility . . . . . . . . . . . . . . . . . .97
Use PIng to Test the LAN Path to Your Gateway . . . . . . . . . . . . . . . . . . .99
Use Ping to Test the Path from a Windows PC to a Remote Device . . .99
Appendix A Supplemental Information
Factory Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
User Manual5
1

1Hardware 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.
6
N600 WiFi Cable Modem Router Model C3700
Ethernet cable
Power adapterModem router

Unpack Your Modem Router

Your package contains the following items.
Figure 1. Package contents
Hardware Setup User Manual7
N600 WiFi Cable Modem Router Model C3700
Power LED
Downstream LED
Upstream LED
Internet LED
WPS button / LED
WiFi On/Off button
5 GHz LED
2.4 GHz LED
Ethernet LED
USB LED

Front Panel

The modem router has status LEDs and buttons on the front.
Hardware Setup User Manual8
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.
LED Description
WPS button with LED
WiFi On/Off but­ton with LED
Power
Downstream
This button lets you use WPS to join the WiFi network without typing the WiFi password. The WPS LED blinks during this process and then lights solid.
Pressing this button for two seconds turns the WiFi radios in the modem router on and off. If this LED is lit, the WiFi radios are on. If this LED is off, the WiFi radios are turned off and you cannot use WiFi to connect to the modem router.
• Green. Power is supplied to the modem router.
• Off. No power is supplied to the modem router.
• Solid green. One or more downstream channels are locked.
• Blinking green. The
• Off. No down
unit is scanning for a downstream channel.
stream channel is locked.
N600 WiFi Cable Modem Router Model C3700
LED Description
Upstream
Internet
2.4 GHz radio
5 GHz radio
• Solid green. One or more upstream channels are locked.
• Blinking green. T
• Off.
• Solid green. The modem router is online.
• Blinking green. Th
• Off. T
• Green. The 2.4 GHz radio is on.
• Off. The 2.4 GHz radio is off.
• Green. The 5 GHz radio is on.
• Off. The 5 GHz radio is off.
No upstream channel is locked.
modem termination system (CMTS).
he modem router is offline.
he unit is scanning for an upstream channel.
e modem router is synchronizing with the cable provider’s cable
Ethernet
USB
• Green. A device is connected to an Ethernet port and powered on.
• Off. No device is connected to an Ethernet port.
• Green. A USB device is connected to the port on the back panel.
• Off. No USB device is connected to the port on the back panel.
Hardware Setup User Manual9
N600 WiFi Cable Modem Router Model C3700
Power adapter input
Ethernet LAN ports
Coaxial cable connector
Power On/Off button
USB port

Rear Panel

The rear panel has the connections and buttons shown the following figure.
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. However, the operating distance or range of your wireless connection can vary significantly depending on the physical placement of your modem router. For example, the thickness and number of walls the wireless signal passes through can limit the range.
Additionally, other wireless access points in and around your home might affect your modem
r’s signal. Wireless access points are modem routers, repeaters, WiFi range extenders,
route or any other device that emits a wireless signal for network access.
Position your modem router according to
Hardware Setup User Manual10
the following guidelines:
• Place your modem router near the center of the area where your computers and other devices operate, and within line of sight to your wireless devices.
• 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
- 2.4 GHz cordless phone
• 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
• (Optional) If you have adjacent access points, use different radio frequency channels to
reduce interference.

Cable Your Modem Router

The most common way to cable your modem router is the simplest, without any other routers or gateways on the same network. You can also cable the modem router to another router or gateway and log in to the modem router to specify this setting.
Hardware Setup User Manual11
N600 WiFi Cable Modem Router Model C3700
Modem router
Power On/Off
Power adapter
Coaxial cable
button

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.
Figure 4. Modem router simple network
To cable your modem router:
1. Connect a co
Use the coaxial cable that your cable company p modem router to a cable wall outlet or a line splitter.
Note: If Charte
2. Connect
electrical outlet.
3. Press the Power On
The Power LED lights green.
You can log in to the modem router to view or change
axial cable.
rovides to connect the cable port on the
r 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.
the power adapter to the modem router and plug the power adapter in to an
/Off button on the rear panel of the modem router.
its settings.

Cable Your Modem Router to a Router or Gateway

If you want to cable the modem router to a router or gateway, then you must log in to the modem router and change its Router Mode setting. Changing this setting prevents certain network conflicts that can occur when two devices on the same network perform routing
Hardware Setup User Manual12
N600 WiFi Cable Modem Router Model C3700
functions such as network address translation (NAT) and DHCP (assigning IP addresses to devices on the network).
To cable your modem router to a gateway or router:
1. Con
nect a coaxial cable.
Use the coaxial cable that your cable company provides to modem router to a cable wall outlet or a line splitter.
Note: I
f 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. Conn
ect the power adapter to the modem router and plug the power adapter in to an
electrical outlet.
3. Press the Power On/Off
button on the rear panel of the modem router.
The Power LED lights green.
4. On your
computer or wireless device, find and select the WiFi network.
The WiFi network name is on the modem router’s label.
in the WiFi network and enter the WiFi password.
5. Jo
The password is on the modem router’s label.
Your wireless device connects to the WiFi network.
6. Launch a web
browser.
connect the cable port on the
ype http://routerlogin.net or http://192.168.0.1.
7. T
A login screen displays.
8. Ente
r the modem router user name and password.
The user name is adm
in. The default password is password. The user name and
password are case-sensitive.
The BASIC Home screen displays.
9. Select AD
10. Select th
VANCED > Administration > Router Mode.
e No radio button.
With this setting, the modem router works as a bridge and obtains IP addresses from the Internet service provider.
11. Click the Ap
ply button.
Hardware Setup User Manual13
Your change is saved.
12. Follow the instructions that came with your router to connect it to the modem router.
Hardware Setup User Manual14
2
2Connect to the Network and
Access the Modem Router
This chapter contains the following sections:
• Connect to the Network
• Types of Logins
• Log In to the Modem Router
15

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. Make sure that the modem router has power (its Power LED is lit).
2. Connect an Ethernet cable to an Ethernet port on your computer.
3. Connect the other end of the Ethernet cable to one of the numbered Ethernet ports.
Your computer connects to the local area network (LAN). A message might display on your computer screen to notify you that an Ethernet cable is connected.

WiFi Connection

You can connect to the modem router’s WiFi network with Wi-Fi Protected Setup (WPS) or you can find and select the WiFi network.
To use WPS to connect to the WiFi network:
1. Make sure that the modem router has power (its Power LED is lit).
2. Check the WPS instructions for your computer or wireless device.
3. Press the WPS button on the modem router.
4. Within two minutes, on your computer or WiFi device, press its WPS button or follow its
instructions for WPS connections.
Your computer or wireless 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 wireless device, find and select the WiFi network.
The WiFi network name is on the modem router’s label.
3. Join the WiFi network and enter the WiFi password.
The password is on the modem router’s label.
Your wireless device connects to the WiFi network.
Connect to the Network and Access the Modem Router
User Manual16
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 service provider gave you this login information in a letter or some other way. If you cannot find this login information, contact your service provider.
• WiFi network key or password. Y network name (SSID) and password for wireless access. This information is on the modem router label.
• Modem router login.This logs you in to as admin.
login that your ISP gave you logs you in to your Internet service. Your
our modem router is preset with a unique wireless
the modem router interface from a web browser

Log In to the Modem Router

When you connect to the network (either with WiFi or with an Ethernet cable), you can use a web browser to access the modem router to view or change its settings. The first time you access the modem router, NETGEAR genie automatically checks to see if your modem router can connect to your Internet service.
Connect to the Network and Access the Modem Router
User Manual17
To log in to 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. The user name and password are case-sensitive.
The BASIC Home screen displays.
Connect to the Network and Access the Modem Router
User Manual18
3

3Specify Initial Settings

This chapter contains the following sections:
• Notify Your Internet Service Provider
• Specify the Cable Connection Starting Frequency
• View Modem Router Initialization
• Specify the Internet Connection Settings
19
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. Cont
act 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 r
outer’s model number, which is C3700.
Note: The modem router is certified by all major cable ISPs.
You can also visit your cable ISP’s website and follow the onscreen instructions to set up your Internet service.
Table 1.
Cable ISP Contact Information
Cox
Mediacom
Optimum
https://www.cox.com/residential/support/home.html https://www.cox.com/activate
1-888-556-1193
https://support.mediacomcable.com
1-855-Mediacom (1-855-633-4226)
https://www.optimum.net/support/contact-us https://install.optimum.com/JointInstall
1-877-810-6750
Sparklight
Spectrum
Xfinity
https://support.sparklight.com
1-877-692-2253
https://www.spectrum.net/contact-us https://activate.spectrum.net
1-833-267-6094
https://www.xfinity.com/internetsetup Use the Xfinity app for Xfinity activation.
Note: The contact information listed might change. You can also find the
contact number in your monthly Internet service billing statement.
2. When asked, provide the modem router’s serial number and MAC address on the product label.
Specify Initial Settings User Manual20
3. Wait for your cable ISP to confirm that your modem router is active.
4. If you do not have an Internet connection with the modem router, ask your cable ISP to look
for your modem router online, and do one of the following depending on what your cable ISP tells you about your modem router:
• If the modem router is not visible, your cable ISP can give you instructions to verify
why the modem router does not connect with your high-speed Internet service.
• If the modem router is visible to your cable ISP, reboot the computer, laptop, or home
gateway that is connected to the modem router. Try checking your online status again.

Specify the Cable Connection Starting Frequency

The starting frequency is automatically generated. For most Internet connections, you do not need to specify this information. If you need to enter a starting frequency, contact your Internet service provider.
To change the starting frequency:
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.
Specify Initial Settings User Manual21
N600 WiFi Cable Modem Router Model C3700
4. Select Cable Connection.
5. Enter an number in the Starting Frequency field.
6. Click the Appl
y 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.
The modem router automatically goes through the fo process:
• Scan
• Ob
• Connect
To view the status of the modem router initialization:
1. Laun
2. Ty
s and locks the downstream frequency and then ranges the upstream channels.
tains a WAN address for the modem router.
s to the Internet.
ch a web browser from a computer or wireless device that is connected to the
network.
pe http://routerlogin.net or http://192.168.0.1.
A login screen displays.
llowing steps in the provisioning
3. Enter
Specify Initial Settings User Manual22
the modem router user name and password.
The user name is ad password are case-sensitive.
The BASIC Home screen displays.
min. The default password is password. The user name and
N600 WiFi Cable Modem Router Model C3700
4. Select Cable Connection.
The Startup Procedure section displays the initialization progress.
The Downstream Bonded Channels section displays the st
atus of each channel.
Specify Initial Settings User Manual23
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. Laun
2. Ty
3. Enter
4. Select A
ch a web browser from a computer or wireless device that is connected to the
network.
pe http://routerlogin.net or http://192.168.0.1.
A login screen displays.
the modem router user name and password.
The user name is ad password are case-sensitive.
The BASIC Home screen displays.
DVANCED > Setup > Internet Setup.
min. The default password is password. The user name and
5. If your Internet connection requires an account name or host name, type it in the Account Name (If Required) field.
your Internet connection requires a domain name, type it in the Domain Name (If
6. If Required) field.
For the other sections in this screen, the def change them.
7. Fo
Specify Initial Settings User Manual24
r the Internet IP Address setting, select one of the following radio buttons:
• Get Dynamically from ISP. Y
automatically assigns these addresses.
our ISP uses DHCP to assign your IP address. Your ISP
ault settings usually work, but you can
• Use Static IP Address. Enter the IP address, IP subnet mask, and the gateway IP
address that your ISP assigned. The gateway is the ISP modem router to which your modem router connects.
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.
Your settings are saved.
Note: If you get address not found errors when you go to a website, it is
likely that your DNS servers are not set up correctly. Contact your ISP to get the DNS server addresses.
Specify Initial Settings User Manual25
4

4Control Access to the Internet

This chapter explains how to prevent objectionable content from reaching the computers and other devices that are connected to your network.
This chapter includes the following sections:
• Use Keywords to Block Internet Sites
• Block Services from the Internet
• Schedule When to Block Internet Sites and Services
• Avoid Blocking on a Trusted Computer
• Set Up Security Event Email Notifications

Use Keywords to Block Internet Sites

You can use keywords to block certain Internet sites from your network. You can use blocking all the time or based on a schedule.
To block Internet sites:
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.
26
N600 WiFi Cable Modem Router Model C3700
4. Select ADVANCED > Security > Block Sites.
5. Select one of the keyword blocking options:
• Per Schedule. T
Schedule When to Block Internet Sites and Services on page 30.)
(See
• Always.
Turn on keyword blocking all the time, independent of the Schedule screen.
urn on keyword blocking according to the Schedule screen settings.
6. In the Keyword
field, enter a keyword or domain that you want to block.
For example:
pecify XXX to block http://www.badstuff.com/xxx.html.
• S
• S
pecify .com if you want to allow only sites with domain suffixes such as .edu or .gov.
• Ent
7. Click the Ad
The keyword is added to the keyword list. The keyword list suppo
8. Click the Ap
er a period (.) to block all Internet browsing access.
d Keyword button.
rts up to 32 entries.
ply button.
Keyword blocking takes effect.
To delete keywords from the list:
aunch a web browser from a computer or wireless device that is connected to the
1. L network.
2. T
ype http://routerlogin.net or http://192.168.0.1.
A login screen displays.
3. Ente
r the modem router user name and password.
The user name is adm
in. The default password is password. The user name and
password are case-sensitive.
The BASIC Home screen displays.
Control Access to the Internet User Manual27
N600 WiFi Cable Modem Router Model C3700
4. Select ADVANCED > Security > Block Sites.
5. Do one of the following:
• T
o 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
Your changes are saved.
Apply button.

Block Services from the Internet

You can block Internet services on your network based on the type of service. You can block the services all the time or based on a schedule.
To block services:
1. Laun
2. Ty
3. Enter
ch a web browser from a computer or wireless device that is connected to the
network.
pe http://routerlogin.net or http://192.168.0.1.
A login screen displays.
the modem router user name and password.
The user name is ad password are case-sensitive.
The BASIC Home screen displays.
min. The default password is password. The user name and
4. Select ADV
5. Specify when to block the services:
• T
o block the services all the time, select the Always radio button.
• T
o block the services based on a schedule, select the Per Schedule radio button.
Control Access to the Internet User Manual28
ANCED > Security > Block Services.
N600 WiFi Cable Modem Router Model C3700
To specify the schedule, see Schedule When to Block Internet Sites and Services on page 30.
6. Click the Ad
d 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.
o add a service or application that is not the list, select User Defined.
8. T
f you know that the application uses either TCP or UDP, select the appropriate
a. I
protocol; otherwise, select TCP/UDP (both).
b. Ent
er the starting port and ending port numbers:
• I
f the service uses a single port number, enter that number in both fields.
• T
o find out which port numbers the service or application uses, you can contact the publisher of the application, ask user groups or newsgroups, or search on the Internet.
9. T
o specify how to filter the services, select one of the following radio buttons:
• Only This IP Address.
• IP Address Range.
Block services for a single computer.
Block services for a range of computers with consecutive IP
addresses on your network.
• All lP Addresses. Block se
10. Click the Ad
d button.
rvices for all computers on your network.
Your changes are saved.
Control Access to the Internet User Manual29

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
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.net or http://192.168.0.1.
A login screen displays.
3. Enter the modem router user name and password.
Use
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 > Schedule.
5. Specify when to block keywords and services:
• Days to Block. Select the check box for each day that you want to block the
keywords or select the Every Day check box, which automatically selects the check boxes for all days.
• Time of Day to Block. Select a start and end time in 24-hour format, or select All Day for 24-hour blocking.
6. Select your time zone from the list.
7. If you use daylight saving time, select the Automatically adjust for daylight savings time
check box.
8. Click the Apply button.
Your settings are saved.

Avoid Blocking on a Trusted Computer

You can exempt one trusted computer from blocking. The computer you exempt must have a fixed IP address. You can use the reserved IP address feature to specify the IP address. See Reserve LAN IP Addresses on page 52.
Control Access to the Internet User Manual30
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