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Modem Router Setup
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N300 Wireless ADSL2+ Modem Router DGN2200v3
Idle Timeout (In minutes). If you want to change the login timeout, enter a new value in
minutes. This determines how long the modem router keeps the Internet connection
active after there is no Internet activity from the LAN. Entering a value of 0 (zero) means
never log out.
Note: The German version of this product includes an Automatic Internet
connection reset setting. This can be used to set the specific time
that the modem router automatically disconnects from the Internet.
Internet IP Address.
• When a login is required, these fields display:
Get Dynamically from ISP. Your ISP uses DHCP to assign your IP address. Your ISP
automatically assigns these addresses.
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’s modem router to which your
modem router will connect.
• When a login is not required, this field displays:
Use IP Over ATM (IPoA). Your ISP uses classical IP addresses (RFC 1577). Enter the IP
address, IP subnet mask, and gateway IP addresses that your ISP assigned.
Domain Name Server (DNS) Address. The DNS server is used to look up site addresses
based on their names.
• 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 does not automatically transmit DNS
addresses to the modem router during login, select this option, and enter the IP address
of your ISP’s primary DNS server. If a secondary DNS server address is available, enter it
also.
NAT (Network Address Translation). NAT automatically assigns private IP addresses
(10.1.1.x) to LAN-connected devices.
• Enable. Usually NAT is enabled.
• Disable. This disables NAT, but leaves the firewall active. Disable NAT only if you are
sure you do not need it. When NAT is disabled, only standard routing is performed by this
modem. Classical routing lets you directly manage the IP addresses that the modem
router uses. Classical routing should be selected only by experienced users.
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• Disable firewall. This disables the firewall in addition to disabling NAT. With the firewall
disabled, the protections usually provided to your network are disabled.
1. Disabling NAT reboots the modem router and resets its configuration settings to the factory defaults. Disable NAT
only if you plan to set up the modem router in a setting where you will be manually administering the IP address space
on the LAN side of the modem.