A variety of application techniques for local connectivity under XP

1. Click Start, open "run" in the Run bar to enter "Gpedit.msc" (inside the quotes) and then OK, the Group Policy is open.

2. Click "Admin Templates" under User Configuration----network----network connection.

3. The "Prohibit access to LAN connections properties" and "Enable Windows2000 network connection settings for administrators" are changed to Enabled.

4.OK, and then look at your local connection properties that have become grayed out.

In the Windows 2000/XP/2003 server operating system, there are three dynamic link library files (Netcfgx.dll, Netshell.dll, and Netman.dll) that are related to network functionality. If you log off the three files, you can block the Network Connections window, and you can prevent the IP address from being modified through the Local Area Connection Properties dialog box.

1. Click the start → run menu, and then click OK when you enter the command "regsvr32 netcfgx.dll/u" in the Open Drop-down text box (only the text in double quotes). If the execution succeeds, a hint message is displayed.

Note: Between the regsvr32 and Netcfgx.dll in the command, between Netcfgx.dll and/u, each space is separated by spaces.

2. Replace the Netcfgx.dll with Netshell. DLLs and Netman.dll can be repeated.

Later, either by clicking Properties in the "Network Places" right menu, you cannot open the Network Connections window by double-clicking the Network Connections icon in the Control Panel window (which actually changes the icon), so you cannot modify the IP address through the Local Area Connection Properties dialog box.

If you want to restore the ability to modify an IP address, simply remove the "/U" parameter from the command above, and then do it again.

Method One: Because the local connection icon is related to the system's Netcfgx.dll, Netshell.dll, Netman.dll These three dynamic link files, once the three dynamic link files are unregistered, the local connection icon will be automatically hidden. When you register the above three dynamic link files, you can first open the System run box and enter the string command "regsvr32 netcfgx.dll/u" command to restore the regsvr32 netcfgx.dll/s

Method Two: 1 Open the System's running dialog box, to execute the gpedit.msc command, in the Group Policy editing window that pops up, expand User Configuration, manage templates, click Taskbar and Start Menu, and then, in the right child window for the taskbar and Start menu, double-click Remove from Start menu Network and dial-up connections option, in the pop-up interface, select the "Enable" option, and then click the "OK" button, OK

Method Three: Run Msconfig shut down the network connections and workstation in the service (generally this does not close also can) to start. When you restart, you are prompted for less than one service.

Three strokes to protect the IP address in the local area network

The IP address in the local area network is occupied or tampered with often, offer a few practical tricks for you.

Deactivate a network connection service

The easiest way to limit the user's arbitrary modification of TCP/IP parameters is to let users fail to open the TCP/IP parameter Settings window. Open start "Run" enter "services.msc" command, select the "Network Connections" service, right-click, select the Deactivate button from the attribute, choose "Startup Type" as "disabled", and determine. In this way, if you go from "Start" to "Network connection", you cannot find the "local connection" icon. This will also bring trouble to their own network parameters, you can "Plug and play" service to deactivate, it does not affect your normal network access

Restriction Modification Network Parameter method

Modifying the relevant network key values of the registry can be achieved. Enter "Run" enter "regedit" command, open registry edit, OK on Hkey_usersdefaultsoftwaremicrosoftwindowscurrentversionpoliciesnetwork branch, In the right area, select Edit, New, DWORD value, and then name the new DWORD value "Nonetsetup", enter the value as "1", restart the computer, and the system will be prompted not to enter the Network Properties Settings window.

Hide Local Area Connection icon method

The local connection icon is related to the system's Netcfgx.dll, Netshell.dll, Netman.dll These three dynamic link files, once the three dynamic link files are unregistered, then the local connection icon will be automatically hidden. When you register the above three dynamic link files, you can first open the system run box, and in which you enter the string command "regsvr32 netcfgx.dll/u" command, click the "OK" button, you can reverse the Netcfgx.dll file registration

To remove a system-hidden local connection

Due to the machine's network card failure, the replacement of the NIC, the system found its own new hardware-the report found a new network card, the system automatically installed driver. After installing the driver, it is found that there is no "local connection" icon in the network connection, only one "local connection 2" icon. When setting the IP address for "Local connection 2", the system prompts that the IP address has been taken up by the hidden NIC.

Because Windows XP installs new hardware devices that do not need to be started, the original hardware information of the system will still exist when there is a hardware update, and we must manually clear the hardware information by modifying the registry. We want to remove the hidden NIC in the system, we must run regedit to open Registry Editor and find hkey_local_mchinesystemcurrentcontrolsetcontrolnetwork{ 4D36E972-E325-11CE-BFC1-08002BE10318} "key value.

Information about local connections is stored under this subkey. There is one or more subkeys here, where the first subkey corresponds to "Local Area Connection", the second subkey corresponds to "Local connection 2" and so on, we can also expand the subkey, and then select the following "Connection" subkey, in the right window will see exactly which connection corresponds to, The entire subkey that corresponds to the previous old connection is deleted directly.

After you modify the registry, restart your computer to properly set the network card

Allow local Area connection to return to normal status

Whether it's on the Internet or on a local area network, we all need to start with a "native connection" and configure the network parameters appropriately. However, in the actual online process, we sometimes find that "local connection" may occur a variety of inexplicable failures, these failures often lead to our network parameters can not be targeted to set, thus affecting the efficiency of our Internet. In order to effectively improve the efficiency of the Internet, we must master some of the "local connection" related to the problem of troubleshooting; This is not, this article listed the "Local connection" relatively easy to occur several fault phenomenon, and the phenomenon of each failure to put forward a different approach, I believe we can bring harvest!

Resolve local Area Connection restricted failures

Some ADSL users in the Windows XP SP2 operating system, broadband dial-up Internet access is often used in the Windows system built-in PPPoE dialing method, but in this way when the Internet, these users may find the "Local connection" icon in the Network Connection List window display status, are often inexplicably adjusted to "restricted or connectionless", but in this state the Internet operation is normal. So this strange state shows how the fault occurred, how can we eliminate such a fault phenomenon?

If the display status of local connection becomes "restricted or connectionless" for no reason, this is usually not caused by a fixed IP address assigned to the NIC. Under normal circumstances, when we found that the "local connection" display is not normal, you can often try to set a static IP address for the network connection, this method often for us to solve a lot of inexplicable network failures. Once we find that the local network connection does not use a fixed IP address, you can click the start/Set/Network Connections command, and then, in the Network Connections list interface that appears, right-click the Local Area Connection icon and execute the Properties command from the right-click menu. Open the Properties Settings window for the local area connection, and in the General tab of the window, select the Internet Protocol item and click Properties.