Netgear C3700 – N600 WiFi Cable Modem Router User Manual

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Specify Network Settings 
N600 WiFi Cable Modem Router Model C3700 
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.
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.
The device displays in the wireless card access list.
Click the Apply button.
Your changes are saved.
Dynamic DNS
If your Internet service provider (ISP) gave you a permanently assigned IP address, you can 
register a domain name and have that name linked with your IP address by public Domain 
Name Servers (DNS). However, if your Internet account uses a dynamically assigned IP 
address, you do not know in advance what your IP address is, and the address can change 
frequently. In this case, you can use a commercial Dynamic DNS service. This type of service 
lets you register your domain to their IP address and forwards traffic directed at your domain 
to your frequently changing IP address.
If your ISP assigns a private WAN IP address (such as 192.168.x.x or 10.x.x.x), the Dynamic 
DNS service does not work because private addresses are not routed on the Internet.
Your modem router contains a client that can connect to the Dynamic DNS service that provided. First visit their website at
 and obtain an 
account and host name that you configure in the modem router. Then, whenever your 
ISP-assigned IP address changes, your modem router automatically contacts the Dynamic 
DNS service provider, logs in to your account, and registers your new IP address. If your host 
name is hostname, for example, you can reach your modem router at
To set up Dynamic DNS:
Launch a web browser from a computer or wireless device that is connected to the 
Type or
A login screen displays.
Enter the modem router user name and password.