Netgear C6220 Docsis 3 0 High Speed Wifi Cable Modem Router User Manual

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 AC1200 WiFi Cable Modem Router Model C6220
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 page displays.
4.  Select  ADV
 ANCED > Administration > Wireless Channel .
The page displays WiFi channels in use in the 2.4 GHz WiFi band. Your network is shown 
in blue. Yellow shows other networks in your area. Laws or guidelines in many coun\
tries 
and geographic locations specify which channels can be used. Depending o\
n your 
location, some channels might not be available.
If many WiFi networks at your location use the same channel as your WiFi\
 network, you 
might experience interference. 
 You can change the channel to avoid the interference.
5.  T
o change the WiFi channel, click the  Change Channel button.
The Wireless Settings page displays.
6.  From the Channel menu, select a dif
 ferent channel setting.
7.  Click the  Apply button.
Your settings are saved. 
						

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AC1200 WiFi Cable Modem Router Model C6220 
Remote Management
The remote management feature lets you access your modem router over the\
 Internet to 
view or change its settings.
Note:
Be sure to change the modem router login password to a secure 
password. The ideal password contains no dictionary words from any 
language and contains uppercase and lowercase letters, numbers, 
and symbols. It can be up to 30 characters. See Change the admin 
Password  on page
  76.
Set Up Remote Management
To set up remote management:
1. Launch a web browser from a WiFi-enabled computer or mobile device that \
is 
connected to the network.
2.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login window opens.
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 page displays.
4.  Select  ADV
 ANCED > Advanced Setup > Remote Management. 
5. Select the  Turn Remote Management On check box. 
						

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83  AC1200 WiFi Cable Modem Router Model C6220
6. Under Allow Remote Access By, specify the external IP addresses to be allowed to access 
the modem router’s remote management.
For enhanced security, restrict access to as few external IP addresses as practical.
Select one of the following:
•To allow access from a single IP address on the Internet, select the Only This 
Computer radio button. Enter the IP address that will be allowed access. 
•To allow access from a range of IP addresses on the Internet, select the IP Address 
Range radio button. Enter a beginning and ending IP address. 
•To allow access from any IP address on the Internet, select the Everyone radio 
button. 
7. Specify the port number for accessing the modem router’s web pages.
Normal web browser access uses the standard HTTP service port 80. For greater 
security, enter a custom port number for accessing the modem router’s web pages 
remotely. Choose a number from 1024 to 65535, but do not use the number of any 
common service port. The default is 8080, which is a common alternate for HTTP.
8. Click the Apply button.
Your settings are saved.
Use Remote Access
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.
Control the LED Settings
You can enable or disable LED blinking when data traffic is detected, and you can turn off all 
LEDs except the Power LED.
To control the LED settings:
1. Launch a web browser from a WiFi-enabled computer or mobile device that is 
connected to the network.
2. Type http://routerlogin.net or http://192.168.0.1.
A login window opens.
3. Enter the modem router user name and password. 
						

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AC1200 WiFi Cable Modem Router Model C6220 
The user name is 
admin. The default password is password . The user name and 
password are case-sensitive.
The BASIC Home page displays.
4.  Select  ADV
 ANCED > Advanced Setup > LED Control Settings .
5. Select a radio button.
6.  Click the  Apply button.
Your settings are saved. 
						

							85
8
8.   Specify Internet Port Settings
You can use port forwarding and port triggering to set up rules for Internet traffic. You need 
networking knowledge to set up these features.
This chapter includes the following sections:
•Set Up Port Forwarding to a Local Server 
•Set Up Port Triggering  
						

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AC1200 WiFi Cable Modem Router Model C6220 
Set Up Port Forwarding to a Local Server
If your home network includes a server, 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. 
 You can specify the servers for applications and you can also specify a d\
efault 
DMZ server to which the modem router forwards all other incoming protoco\
ls.
To forward specific incoming protocols:
1.  Decide which type of service, application, or game you want to provide.
2.  Find the local IP address of the computer on your network that will prov\
ide the service.
The server computer must always use the same IP address. To specify this setting, use  the reserved IP address feature. See Manage LAN IP Addresses on page  53.
3.  Launch a web browser from a WiFi-enabled computer or mobile device that \
is connected to 
the network.
4.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login window opens.
5.  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 page displays.
6.  Select  ADV
 ANCED > Advanced Setup > Port Forwarding/Port Triggering.
7. Leave the  Port Forwarding radio button selected as the service type. 
						

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 AC1200 WiFi Cable Modem Router Model C6220
8. 
From the Service Name  menu, select the service name.
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  87.
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.
You can usually find this information by contacting the publisher of the \
application or user  groups or news groups.
2.  Launch a web browser from a WiFi-enabled computer or mobile device that \
is connected to 
the network.
3.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login window opens.
4.  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 page displays.
5.  Select  ADV
 ANCED > Advanced Setup > Port Forwarding/Port Triggering.
The Port Forwarding/Port Triggering page displays.
6.  Leave the  Port Forwarding  radio button selected as the service type.
7.  Click the  Add Custom Service button.
8. In the Service Name field, enter a descriptive name. 
9.  In the Service T
 ype menu, select the protocol.  
						

							Specify Internet Port Settings 
88 AC1200 WiFi Cable Modem Router Model C6220 
If you are unsure, select TCP/UDP.
10. In the External Starting Port field, enter the beginning port number. 
If the application uses a single port, enter the same port number in the Ending Port field.
If the application uses a range of ports, enter the ending port number of the range in the 
External Ending Port field.
11. To specify the internal starting and ending ports, do one of the following:
•Type the port numbers in the Internal Starting Port and Internal Ending Port fields.
•Select the Use the same port range for Internal ports check box.
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 page.
Edit a Port Forwarding Service
To edit a port forwarding entry:
1. Launch a web browser from a WiFi-enabled computer or mobile device that is 
connected to the network.
2. Type http://routerlogin.net or http://192.168.0.1.
A login window opens.
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 page displays.
4. Select ADVANCED > Advanced Setup > Port Forwarding/Port Triggering.
The Port Forwarding/Port Triggering page displays.
5. Leave the Port Forwarding radio button selected as the service type.
6. In the table, select the radio button next to the service name.
7. Click the Edit Service button.
The Ports - Custom Services page displays.
8. Specify changes to the settings.
9. Click the Apply button.
Your settings are saved. 
						

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89  AC1200 WiFi Cable Modem Router Model C6220
Delete a Port Forwarding Entry
To delete a port forwarding entry:
1. Launch a web browser from a WiFi-enabled computer or mobile device that is 
connected to the network.
2. Type http://routerlogin.net or http://192.168.0.1.
A login window opens.
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 page displays.
4. Select ADVANCED > Advanced Setup > Port Forwarding/Port Triggering.
The Port Forwarding/Port Triggering page displays.
5. Select the Port Forwarding radio button as the service type.
6. In the table, select the radio button next to the service name.
7. Click the Delete Service button.
The service is deleted.
Application Example: Make a Local Web Server Public
If you host a web server on your local network, you can use port forwarding to allow web 
requests from anyone on the Internet to reach your web server. 
To make a local web server public:
1. Assign your web server either a fixed IP address or a dynamic IP address using DHCP 
address reservation. 
In this example, your modem router always gives your web server an IP address of 
192.168.0.33. 
2. On the Port Forwarding/Port Triggering page, configure the modem router to forward the 
HTTP service to the local address of your web server at 192.168.0.33. 
HTTP (port 80) is the standard protocol for web servers.
3. (Optional) Register a host name with a Dynamic DNS service, and specify that name on the 
Dynamic DNS page of the modem router.
For more information, see Dynamic DNS on page 64.
Dynamic DNS makes it much easier to access a server from the Internet because you 
can type the name in the Internet browser. Otherwise, you must know the IP address that 
the ISP assigned, which typically changes. 
						

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90 AC1200 WiFi Cable Modem Router Model C6220 
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. Your modem router receives the message and finds your port forwarding rule for incoming 
port 80 traffic. 
3. The modem router changes the destination in the message to IP address 192.168.0.123 
and sends the message to that computer.
4. Your web server at IP address 192.168.0.123 receives the request and sends a reply 
message to your modem router.
5. Your modem router performs Network Address Translation (NAT) on the source IP address, 
and sends the reply through the Internet to the WiFi-enabled computer or mobile device that 
sent the web page request. 
Set Up Port Triggering
Port triggering is a dynamic extension of port forwarding that is useful in these cases:
•An application uses port forwarding to more than one local computer (but not 
simultaneously).
•An application opens incoming ports that are different from the outgoing port.
With port triggering, the modem router monitors traffic to the Internet from an outbound 
“trigger” port that you specify. For outbound traffic from that port, the modem router saves the 
IP address of the computer that sent the traffic. The modem router temporarily opens the 
incoming port or ports that you specify in your rule and forwards that incoming traffic to that 
destination.
Port forwarding creates a static mapping of a port number or range of ports to a single local 
computer. Port triggering can dynamically open ports to any computer when needed and 
close the ports when they are no longer needed.
Note:If you use applications such as multiplayer gaming, peer-to-peer 
connections, real-time communications such as instant messaging, or 
remote assistance (a feature in Windows XP), enable Universal 
Plug-N-Play (UPnP). See 
Improve Network Connections With 
Universal Plug-N-Play on page 65.