NETGEAR C7800 User User guide

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350 East Plumeria Drive
San Jose, CA 95134
USA
July 2017
202-11735-02
AC3200 WiFi Cable Modem Router
Model C7800 User Manual
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Contents
Chapter 1 Hardware Setup
Chapter 2 Connect to the Network and Access the Modem Router
Unpack Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Top and Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Position Your Modem Router. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Install and Activate Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Connect Your Modem Router to a Computer. . . . . . . . . . . . . . . . . . . . . . . . . . 12
Activate Your Internet Service With Comcast XFINITY . . . . . . . . . . . . . . . . . . 13
Perform a Speed Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connect Your Modem Router to a Router After Installation and Activation . . 14
Connect to the Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wired Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
WiFi Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Types of Logins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Log In to the Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Access the Modem Router With NETGEAR genie App . . . . . . . . . . . . . . . . . . . . . 19
Chapter 3 Specify Your Internet Settings
Specify the Cable Connection Starting Frequency . . . . . . . . . . . . . . . . . . . . . . . 21
View Modem Router Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Manually Set Up the Internet Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Change the MTU Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Chapter 4 Control Access to the Internet
Set Up Parental Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Block Access to Your Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Use Keywords to Block Internet Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Delete a Keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Block Services From the Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Schedule When to Block Internet Sites and Services. . . . . . . . . . . . . . . . . . . . . . 32
Avoid Blocking on a Trusted Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Set Up Security Event Email Notifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Enable or Disable NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
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AC3200 WiFi Cable Modem Router
WiFi. 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.
Table 2. Front panel button descriptions
Button Description
LED Pressing this button changes the LED mode:
Mode one.
Mode two. All
Mode three. Only the Power LED stays on and the other LEDs are of
WPS Pressing this button lets you use WPS to join the WiFi network without typing the WiFi
password.
WiFi Pressing this button for two seconds turns the 2.4 GHz and 5 GHz WiFi radios on and off.
All LEDs stay on and blink.
LEDs stay on but don’t blink.
f.
Rear Panel
The connections and button on the rear panel are shown in the following figure.
Reset button
Coaxial cable connector
Figure 3. Modem router rear panel
Ethernet LAN port
Power On/Off button
Power adapter input
Hardware Setup
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