D-Link DI-774 manual What is NAT?

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Frequently Asked Questions (continued)

What is NAT?

NAT stands for Network Address Translator. It is proposed and described in RFC- 1631 and is used for solving the IP Address depletion problem. Basically, each NAT box has a table consisting of pairs of local IP Addresses and globally unique addresses, by which the box can “translate” the local IP Addresses to global address and vice versa. Simply put, it is a method of connecting multiple computers to the Internet (or any other IP network) using one IP Address.

D-Link´s broadband routers support NAT. With proper configuration, multiple users can access the Internet using a single account via the NAT device.

For more information on RFC-1631: The IP Network Address Translator (NAT), visit http://www.faqs.org/rfcs/rfc1631.html

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Contents Link Air Xpert DI-774 Contents Package Contents Introduction LAN ports WAN port is PowerAdapter Features LEDs Front Panel of Unit Wireless Basics Wireless Basics Setting up a Wireless Infrastructure2 Network Getting StartedUsing the Configuration Menu Home WizardUsing the Configuration Menu Home Wireless Open or Shared Wireless SettingsKey Type Home Wireless Open or Shared Channel AuthenticationWEP Encryption KeysLifetime Home Wireless WPA AuthenticationRadius Server Home Wireless WPA-PSK Home WAN Dynamic IP Address Host Name MAC Address Clone Primary/Secondary DNSHome WAN Static IP Address Subnet Mask Gateway Address Primary/ Secondary DNSHome WAN PPPoE PasswordService Name PPPoEAuto-reconnect MaximumIdle Time Home LANHome Dhcp Dynamic Host Control Protocol.Advanced Virtual Server Example #1 Example #2 Name Trigger Port Trigger Type Public Port Advanced ApplicationsPublic Type Port Advanced Filters IP FiltersIP Filters Protocol TypesAdvanced Filters URL Blocking Filters URL Blocking- KeywordsAdvanced Filters MAC Filters Filters MAC Filters Name MAC Address Dhcp ClientDomain Blocking Advanced Filters Domain BlockingFilters Permitted DomainsAction Advanced FirewallFirewall Rules SourceAdvanced DMZ DMZPerformance WirelessTransmit Power Beacon interval Data RateTX Rates Select Open system or Shared KeyUser Login Name Advanced Performance 802.11g CTS ModeTools Admin Administrator Login Name Admin PasswordDefault Tools AdminTools Time Load Settings from Tools System System Settings Save Settings toRestore to Factory Tools Firmware Upgrade BrowseRestart Device Tools MiscPing Test Discard PingTools Cable Test Status Device Info Log SettingsStatus Log View Log Email Address Status Log Log Settings Smtp Server IP AddressLog Type Status Wireless Connected Client List Status StatsHelp Networking Basics Microsoft Windows XPNetworking Basics Enter a Computer description and a Computer name optional Workgroup nameNetworking Basics Networking Basics Networking Basics Network Setup Wizard Naming your Computer Right-click on My ComputerChecking the IP Address in Windows XP Computer nameSupport tab Control PanelConnections Network ConnectionsProperties Assigning a Static IP Address Windows XP/2000 Assigning a Static IP Address with Macintosh OSX Selecting a Dynamic IP Address with Macintosh OSX Checking the Wireless Connection by Pinging in Windows Me Troubleshooting Troubleshooting Select Hardware Tab ManagerAdapters Why can’t I get a wireless connection? Why does my wireless connection keep dropping?Resetting the DI-774 to Factory Default Settings Technical Specifications Advanced Firewall FeaturesTechnical Specifications Wireless Transmit Power Frequently Asked Questions Why can´t I access the web based configuration?Frequently Asked Questions LAN Settings button How can I find my IP Address in Windows 95, 98, or ME? How can I find my IP Address in Windows 2000/XP? How can I assign a Static IP Address in Windows XP? Places and select PropertiesYes Network Neigborhood icon Win ME MyClick on the DNS Configuration tab Click Specify an IP AddressDynamic Cable connection Static Cable Connection Frequently Asked Questions To set up your router How do I open ports on my router? How do I configure the DMZ Host? What is DMZ?Demilitarized Zone DI-774 Frequently Asked Questions How do I use PC Anywhere with my router? What are virtual servers?Click Click ContinueHow can I use eDonkey behind my D-Link router? FirewallHow do I set up my router for Socom on my Playstation 2? How can I use Gamespy behind my D-Link router? Private Port Public PortHow do I configure my router for KaZaA and Grokster? Configure the Game Port information on each computer How do I configure my router to play Warcraft 3?For the DI-604, DI-614+. DI-624, DI-754, DI-764, or DI-774 How do I set up my router to use iChat? -for Macintosh users How do I use NetMeeting with my D-Link router?Step Then Virtual Server Choose Apple menu System Preferences Choose View SharingFrequently Asked Questions What is NAT? Technical Support Warranty and Registration USA onlyPage Important Note