Netgear C3000 N300 Wifi Cable Modem Router User Manual

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 N300 WiFi Cable Modem Router Model C3000
4. 
Select  ADVANCED > Administration > Diagnostics.
5.  In the Utility list, select T
 raceroute.
6. Specify the following parameters for the traceroute utility:
• T
arget. The IP address or host name of the computer you are tracing.
•Max Hops . 
 The maximum number of hops to allow when tracing the route.
• Data Size. 
 The input the size (in bytes) of the packet.
• Base Port. 
 The port number to send the packet to.
• Resolve Host. Select On to resolve the host name to the IP address.
7.  Click the  Start T
 est button. 
The traceroute results display.
8.  T
o clear the results from the display, click the  Clear Results button.
View Wireless Access Points in Your Area
You can view wireless networks, or access points, in your area and to sel\
ect and join a 
wireless network. 
To manage your wireless access point (AP):
1.  Launch a web browser from a computer or wireless device that is connecte\
d to the 
network.
2.  T
ype  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. 
						

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N300 WiFi Cable Modem Router Model C3000 
The BASIC Home screen displays.
4.  Select  ADV
 ANCED > Administration > Wireless AP .
From this screen, you can view wireless access points in use in your are\
a. 
View or Change the Modem Router Wireless Channel
To view or check your wireless channel:
1. Launch a web browser from a computer or wireless device that is connecte\
d to the 
network.
2.  T
ype  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. 
						

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 N300 WiFi Cable Modem Router Model C3000
4. 
Select  ADVANCED > Administration > Wireless Channel .
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 ca\
n be used. 
Depending on your location, some channels might not be available.
If many wireless networks at your location use the same channel as your \
wireless 
network, you might experience interference. 
 You can change the channel to avoid the 
interference.
5.  T
o change the wireless channel, click the  Change Channel button.
The Wireless Setup screen displays.
6.  In the Channel  list, select a dif
 ferent channel setting.
7.  Click the  Apply button.
8.  Y
our changes take effect
Remote Management
Remote management lets you access your modem router over the Internet to\
 view or change 
its settings.
Before using remote management, 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 b\
e up to 30 
characters. See Change the admin Password on page  77.
To set up remote management:
1.  Launch a web browser from a computer or wireless device that is connecte\
d to the 
network.
2.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login screen displays. 
						

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N300 WiFi Cable Modem Router Model C3000 
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  ADV
 ANCED > Advanced Setup > Remote Management. 
5. Select the  Turn Remote Management On check box.
6.  Under 
Allow Remote Access By, specify the external IP addresses to be allowed to access 
the  modem router’s  remote management.
Note: For enhanced security, restrict access to as few external IP addresses 
as practical.
Select one of the following:
• T
o 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. 
• T
o 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. 
• T
o allow access from any IP address on the Internet, select the Everyone radio 
button. 
7.  Specify the port number for accessing the web management interface.
Normal web browser access uses the standard HTTP service port 80. For gr\
eater 
security
 , enter a custom port number for the remote web management interface. Ch\
oose 
a number from 1024 to 65535, but do not use the number of any common ser\
vice port. 
The default is 8080, which is a common alternate for HTTP.
8.  Click the  Apply button.
Your changes take effect.
To use remote access:
1.  Launch a web browser on a computer that is not on your home network. 
						

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85  N300 WiFi Cable Modem Router Model C3000
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. 
						

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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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 N300 WiFi Cable Modem Router Model C3000
Set Up Port Forwarding to a Local Server
If you have a server in your home network, you can allow certain types o\
f 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 traf
 fic 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 protocols.
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 have the same IP address. To specify this setting, use  the reserved IP address feature. See Reserve LAN IP Addresses  on page
  51.
3.  Launch a web browser from a computer or wireless device that is connecte\
d to the network.
4.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login screen displays.
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 screen displays.
6.  Select  ADV
 ANCED > Advanced Setup > Port Forwarding/Port Triggering.
7. Leave the  Port Forwarding  radio button selected as the service type.
8.  In the Service Name list, select the service name. 
						

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N300 WiFi Cable Modem Router Model C3000 
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
 88.
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 computer or wireless device that is connecte\
d to the network.
3.  T
ype  http://routerlogin.net  or http://192.168.0.1.
A login screen displays.
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 screen displays.
5.  Select  ADV
 ANCED > Advanced Setup > Port Forwarding/Port Triggering.
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 list, select the protocol. If you are unsure, select  TCP/UDP.
10.  In the  External Starting Port field, enter the beginning port number
 . 
11.  T
o specify the external ending port, do one of the following: 
						

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89  N300 WiFi Cable Modem Router Model C3000
•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.
12. Type the port numbers in the Internal Starting Port and Internal Ending Port fields.
13. Type the IP address in the Internal IP address field or select the radio button for an 
attached device listed in the table.
14. Click the Apply button. 
The service is now in the list on the Port Forwarding/Port Triggering screen.
Edit a Port Forwarding Service
To edit 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. Select ADVANCED > Advanced Setup > Port Forwarding/Port Triggering.
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 screen displays.
8. Specify changes to any of the following settings:
•Service Name. Type the service name.
•Service Type. If you are unsure, select TCP/UDP.
•External Starting Port. If the application uses a single port, enter the same port 
number in the External 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.
•Internal Starting Port. By default, this is the same as the Internal Ending Port value. 
•Internal IP address. Type the IP address in the Internal IP address field, or select the 
radio button for an attached device listed in the table.
9. Click the Apply button.
Your changes are saved. 
						

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90 N300 WiFi Cable Modem Router Model C3000 
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. Select ADVANCED > Advanced Setup > Port Forwarding/Port Triggering.
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.
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. In the Port Forwarding/Port Triggering screen, configure the 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 in the 
Dynamic DNS screen of the modem router. For information about Dynamic DNS, see 
Dynamic DNS on page 62.
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.