CNet Technology CNIG904S manual NAT Network Address Translation, Remote Management

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CNet Technology Inc

Options

NAT (Network Address Translation)

NAT allows PCs on your LAN to share a single external (Internet) IP Address. This IP Address is supplied by your ISP. Use the following to determine whether or nor you need NAT.

For Internet access, NAT must be left On unless all PCs on your LAN have valid external IP Addresses.

If this device is not being used to provide shared Internet access, NAT is not normally required. With NAT disabled, the Broadband Router will act as a static router.

If NAT is disabled, the Firewall protection provided by the Broadband Router is lost, and the Advanced Internet features (Virtual Servers, Special Applications, and DMZ) are no longer available.

TFTP

TFTP (Trivial FTP) can be used to upgrade the firmware in the Broadband Router. However, this is not normally required; there is a Windows utility available for this purpose.

Remote Management

This feature allows you to manage the Broadband Router via the Internet.

Enable Remote Man-

Enable to allow management via the Internet. If Disabled, this

agement

device will ignore management connection attempts from the

 

WAN port.

 

 

Port Number

Enter a port number between 1024 and 65535 (8080 is recom-

 

mended). This port number must be specified when you connect

 

(see below).

 

Note: The default port number for HTTP (Web) connections is

 

port 80, but using port 80 here will prevent the use of a Web

 

"Virtual Server" on your LAN. (See Advanced Internet - Virtual

 

Servers)

 

 

Current WAN Port

You must use this IP Address to connect (see below).

IP Address

This IP Address is allocated by your ISP. But if using a Dy-

 

 

namic IP Address, this value can change each time you connect

 

to your ISP. So it is better if your ISP allocates you a Fixed IP

 

Address.

 

 

To connect from a remote PC via the Internet

1.Ensure your Internet connection is established, and start your Web Browser.

2.In the "Address" bar, enter "HTTP://" followed by the WAN IP Address of the Broadband Router. If the port number is not 80, the port number is also required. (After the IP Ad- dress, enter ":" followed by the port number.)

e.g.

HTTP://123.123.123.123:8080

This example assumes the WAN IP Address is 123.123.123.123, and the port number is 8080.

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Contents Shared Broadband Internet Access User’s GuideTable of Contents Overview General Problems Internet Access Broadband RouterBroadband Router Features LAN FeaturesIntroduction Internet Access Features Configuration & ManagementSecurity Features Advanced Internet FunctionsPackage Contents Physical Details Top Mounted LEDsRear Panel DIP Switches Restore Default IP Address and Clear PasswordDIP Switch Setting Description Installation Installation ProcedureChoose an Installation Site RequirementsPower Up Connect Adsl or Cable ModemCheck the LEDs Configuration OverviewTo Do this Refer to Configuration Program Connecting to the Broadband RouterPreparation If you cant connect Navigation & Data InputLAN Configuration LAN ScreenData LAN Screen IP AddressDhcp Server DNS Domain Name ServerRouting Table WAN Configuration WAN Direct ConnectionTip Data WAN Direct ConnectionIP Address ButtonsWAN PPPoE Data WAN PPPoEAccount OptionsWAN Status WAN Status Direct ConnectionData WAN StatusWAN Status PPPoE Status DataConnection Log Connection Log Messages Message DescriptionLAN/Device Status Data LAN/Device StatusDevice LAN PortStatus PC Configuration TCP/IP SettingsTo check your PCs TCP/IP Settings Using Dhcp Using Specify an IP AddressDNS Tab Win 95/98 Internet Access Configuration Accessing AOLMacintosh Configuration Using the Broadband Routers Dhcp Server Using another Dhcp ServerChapter What Dhcp DoesTo Configure your PCs to use Dhcp Broadband Router Configuration Using this ScreenRouting Routing Table Data DestinationGateway InterfaceRouter Configuration Routing ExampleLocal Router Other Routers on the Local LANFor Router As Default Route For Router Bs Default RouteFor the Broadband Routers Routing Table Entry 1 SegmentPassword When prompted for the password, leave the User Name blankDevice Options NAT Network Address Translation Remote ManagementTo connect from a remote PC via the Internet Advanced Internet Advanced Internet ScreenUsing a Special Application Special Internet ApplicationsSpecial Applications Screen At any time, only one 1 PC can use each Special ApplicationConfiguration Data from Service Provider Virtual Servers Remote PCIP Address seen by Internet Users Types of Virtual ServersVirtual Server Configuration WAN IP AddressType LAN IP AddressUser Defined Virtual Servers To Modify Edit a defined ServerTo Delete a defined Server To List all ServersConnecting to the Virtual Servers DetailsConfiguring the DMZ DMZ ScreenEnable Enable DMZFeature DataAccess Control To use this featureTo Change Access for an Existing Group Security GroupsOperations To Define a Security GroupAccess Rights Internet Access for this Group Packet Filter TablePCs To Add a New PCTo Delete an Existing PC To Change an Existing PCs DetailsFilters TCP Packets TCP FiltersPort No UDP FiltersTroubleshooting General ProblemsInternet Access Specifications Broadband Router