Ask a trivial question, don’t laugh at me

Connect both network cables to the router (just don’t connect to the wan port) and then set up the settings on the two computers to start setting the network connection local connection properties. Tcp/Ip protocol is set to automatically obtain an IP address and it is ok.

The following is more detailed information

If there are two or more computers in a home or small office, it is natural to want to form them into a network. For convenience of description, the following convention refers to it as a local area network. In a home environment, this network can be used to share resources, play games that require multi-person participation, enjoy an Internet connection using only one modem, and so on. In the office, the use of such a network mainly solves the problem of shared peripherals such as printers. In addition, the office LAN is also the infrastructure for multi-person collaborative work.

Despite such a small network project, in the past, professionals were required to configure the network. At that time, most operations were done manually, and ordinary users did not have the corresponding knowledge and experience. It happens to be a situation of "If you can't succeed at high level, you can't settle at low level", which naturally limits its development. The emergence of Windows XP has broken this situation, relying on its built-in powerful network support functions and convenient wizards. After the user completes the physical connection, he can run the connection wizard to detect the network hardware, install the corresponding driver or protocol, and guide the user to complete all configuration steps.

This article introduces two networking solutions under the Windows XP operating system, and introduces various distinctive functions of Windows XP used in local area networks.

1. Goal:

Form a home LAN: Externally, it can connect to the Internet, allowing all computers in the LAN to share the connection. Internally, network resources and equipment can be shared.

2. What network form is used?

The computers in the home network may be desktop computers or portable computers, such as handheld computers or laptops, etc., and may also have interfaces for various transmission media. Therefore, in terms of network form, it is not appropriate to use wired networks or wireless networks. Interfaces must be considered. However, if it can be clearly positioned on a purely wired network, there is no need to set up a wireless interface. Therefore, here are two options:

1. Mix of wired and wireless.

2. Wired.

3. Network hardware selection

The network adapter (network card) can use PCI, PC or PCMCIA interface cards (the latter two are mostly used on portable computers or notebooks), Windows XP also Supports network adapters with USB interface. Which adapter is used depends on the computer connected to the network. No matter what kind of adapter, you need to pay attention to the coordination with the existing computer interface and HUB. The USB interface adapter may be more adaptable, but for older computers, you need to pay attention to whether it supports the USB interface.

The most commonly used network cables are coaxial cables and twisted pairs. These are familiar things to everyone and will not be explained in detail. Which one to use depends on what you think.

IV. Adoptable network structures and media

Ethernet structure: This structure is the most popular among office or business users, and many people are familiar with it, including technical information and maintenance personnel. It’s easy to find, so I won’t go into details.

Telephone line connection: The main features of this form are that the cost is very low and the physical connection is simple, making it suitable for most home users.

Radio waves: Use electromagnetic wave signals to transmit signals. They can communicate without any connections and can be used on the move. However, it is necessary to install a wireless adapter on each computer, which is definitely costly. In our country, wireless modes are still rarely used in computer network communications. In the United States, a standard protocol called IEEE 802.11b is used for wireless networks and is used for computer short-range network communications. With the support of this protocol, the achievable network speed is 11 Mbps.

V. Solution One

This is a wired and wireless hybrid solution. Please refer to Figure 1 for the specific structure.

In this example, 4 computers are used to form a mixed network. PC1 is the host computer and has 3 channels for external connections:

1. Modem connected to the Internet: used for each computer on the entire network* **Enjoy access to the Internet.

2. Wireless adapter: used for communication with wireless devices in this network.

3. HUB: used to "drive" downstream computers in this network.

PC1 and PC2 in this solution must use Windows XP operating system, and the wired part uses an Ethernet structure for connection. HPNA in the picture is the abbreviation of home phoneline network adapter, which means home phone line network adapter. The PC3 and mobile computers in the picture do not require the use of Windows XP operating system, other Windows versions are also acceptable. The network connection between the mobile computer and the host computer is wireless.

If you want to build a hybrid network, this solution already has typical functions, and you can expand the network size without spending a lot of money.

About the connection operation:

The structure shown in Figure 1 can only represent the physical connection relationship. After the physical connection is completed, the connection operation needs to be performed before the network can be truly put into use. Connectivity operations include connectivity between computers within the LAN and connectivity between the LAN and the Internet. The steps to establish the former connection are as follows:

1. Click Start, enter the control panel, click "Network and Internet Connections", select Network Connections, and proceed to the next step.

2. Select "Connection of two or more LANs"

3. Right-click a connection.

4. Confirm to complete the connection task. < /p>

The connection operation within the LAN is completed.

Let’s talk about the connection between the LAN and the Internet. In this case, the main consideration is both speed and cost. The most trouble-free way to access the Internet from multiple machines is for each machine to occupy an independent phone line, but this is not something ordinary users can afford, and the waste of resources is also too great. Another way is to use a residential gateway, but this costs more and is not the best way. A better approach is to use one computer as the host server. This is not only technically feasible, but also has many other advantages, such as:

①: Since Windows XP has a built-in firewall, the host is between the Internet and the terminal, and the host's firewall can be used to protect the LAN. Extensions in the network are protected from attacks from the Internet.

②: The host is "hidden" between the Internet and the LAN, acting as a gateway. On the extension, the user feels as if he is directly connected to the Internet, and is unaware that there are other The host exists. In particular, every computer in the local area network can access the Internet at the same time. Equipment investment is greatly reduced.

③: Except that the host computer must use the Windows XP operating system, computers in the LAN can use earlier Windows versions.

④: If different media need to be used in the LAN (such as a mix of wired and wireless), Windows XP can be used as a transition bridge.

⑤: Although there is a function of sharing network resources and devices, it can also restrict others’ access to private files and data, especially when files are stored on the host. Advantages available.

⑥: Using the "universal plug and play" function, you can expand the scale of the LAN at any time.

6. Solution 2

The following is a schematic structural diagram of this solution. This solution is suitable for small offices. Compared with the previous solution, the main thing is that the wireless part is removed. The host and extension are not connected by telephone lines, but by cables or twisted pairs. All extensions are connected to the Internet through a HUB and the host, and can support printer sharing. This is actually the most common structure of a local area network.

After the solution completes the physical connection, you still need to perform the following operations:

1. Open the network connection folder or find the network connection icon.

2. Right-click on "connection to the Internet you want to share" and then right-click on "Properties"

3. Select the "Advanced" taskbar.

4. Select the "Allow other network users to connect through this computer's Internet connection (Allow other users to connect to the Internet through this computer)" check box and select it.

5. Click OK to end the operation.

To enable the Windows XP firewall, you must set it up. It will not work if you don't set it up. Setting process:

1. Open the network connection folder or find the icon of the network connection.

2. Right-click "connection to the Internet you want to share" Connection)" and then right-click "Properties"

3. Select the "Advanced" task bar.

4. Select "Protect my computer and network by limiting or preventing access to this computer from the Internet (Use this computer to limit access from the Internet and protect my computer and network", below it there is Click the checkbox of Internet connection firewall to select it.

5. Click OK to end the operation.

7. A. The Windows XP operating system must be used. Computers in the LAN can use earlier Windows versions, such as windows98, windows ME, windows2000, etc.

B. What is provided here is a typical situation, and you want to expand the network. The scale can basically be stacked like this.

C. This article is based on the English test version, and there is no guarantee that the performance of the future official version will be exactly the same.

< p>The answer on the first floor is really hard. Set it up according to his opinions. In the end, don’t forget to confirm his answer as the best answer.

In addition, set up a home LAN (***enjoyment). Internet) can have a simpler way, ADSL, TP-LINK router, 2-4 computers (each computer is equipped with a network card), if there are more than 4 computers, you need to add an ADSL connection. Go to the WAN port of the router and make the necessary settings for the router (if you need to introduce the details, use SKYPE to call me or QQ123960413), connect the computer to the 4 Lan ports of the router through network cables, so that a small LAN can be formed.

The broadband modem is connected to the router, and the computer and the router are connected with a network cable. If you want the two computers to access each other, just open the computer's VPN sharing. Note that the two computers must be working at the same time. In the group, the broadband username and password are set in the router.

1. The two computers must be in the same workgroup. The setting method is to right-click "My Computer" - Properties - Computer Name - There is a workgroup (for example, machine #1 is WORKGROUP). Use the above method to check whether machine 2# belongs to this workgroup. If not, click Change - change the workgroup box at the bottom to the same workgroup name as the machine (you can also customize one, but it must have the same name), - click OK

2. (Machine 1) - Right-click the folder you want to share - Properties - Share - Share the box in front of this folder on the network Tick ??- click Apply

3. Double-click "Network Neighborhood" on the desktop of machine 2 - View the workgroup computers - and then double-click the icon of the computer name of the computer that appears, and the computer name you want will appear. A shared folder can be opened by double-clicking it.

4 In turn, the folder of 2# confidential files on 1# machine is the same as 2.3

5. To cancel the sharing, just uncheck 2.

1. Connection and basic settings

1. Cable connection

To use a broadband router, you first need to install and connect to the broadband router. First connect the power supply of the broadband router. After the connection is completed, the POWER (power) light on the broadband router panel will be on, the broadband router system will start, and the SYS or SYSTEM (system) light will flash. Then connect the network cable, and connect the broadband cable (crossover cable, the broadband cable can be the ADSL/Cable MODEM cable of the Ethernet interface, or the network cable of the LAN access) to the WAN port of the broadband router. If there is no problem with the cable The WAN port light on the broadband router will stay on. Next, use a straight-through cable to connect the network card or hub/switch on the computer (if it is transferred through a switch or hub, please confirm that the connection method is from the LAN port of the router to the UPLINK port or ordinary port of the switch using a standard straight-through cable, and then Use a standard straight-through cable to connect from the ordinary port of the switch to the network card) and any interface in the LAN of the broadband router. The corresponding indicator light in the LAN indicator light of the broadband router will be on.

Although current broadband routers support the twisted-pair suspension automatic crossover function and can be compatible with straight-through lines or crossover lines, it is best to use formal methods when connecting.

2. Obtain an IP address automatically

Broadband routers have integrated DHCP servers, and the DHCP server is enabled by default, which can automatically assign IPs to connected computers. address, so for all computers connected to the broadband router, under normal circumstances, do not add IP addresses, set up DNS, etc. for them.

So before using the broadband router, you need to set the TCP/IP protocol of your computer's network card to "obtain an IP address automatically" (when there is an IP address conflict in the network or everything is set normally, still This method can be used when you cannot log in to the router's settings interface). In the Windows98/Me operating system, you can click "Control Panel" → "Network" → "General" → "TCP/IP - Current computer's network card model" → "Properties", and set the "IP Address" item to "Automatic" Get IP Address", the "DNS Configuration" item is set to "Disable DNS", and the "Gateway" item is blank (it can be deleted if it exists).

In the Windows 2000/XP operating system, open "Start" → "Control Panel" → "Network and Internet Connections" → "Network Connections" → "Local Area Connection" properties → "Internet" on the computer. Protocol (TCP/IP)" → "Properties". In the window that opens, make sure "Obtain an IP address automatically" and "Obtain a DNS server address automatically" are both selected, save and exit.

3. Release and update the IP address

The IP address of each computer's network card and the broadband router must be in the same network segment. To achieve this purpose, you can restart the computer. To solve it, you can also use the release and update commands more conveniently to solve it.

In the Windows98/Me operating system, you can click "Start → Run", enter the "winipcfg" command in the run bar, and then "OK". In the opened "IP Configuration" interface, first select "Release", and then click the "Update" button. The IP configuration will allow the machine's network card to automatically obtain a new IP address in the same network segment as the broadband router.

In the Windows 2000/XP operating system, you can click "Start" → "Run" on the computer, enter the "cmd" command in "Open", and then press Enter. In the command prompt window that appears First enter "ipconfig /all" and press Enter. You can check the IP address acquisition status and MAC address of all adapters of the current computer to see if they are correct. Or directly enter the "ipconfig/release" command and press Enter to release the IP address currently obtained by the network card; then enter the command to update the IP address "ipconfig/renew" and press Enter. If there is no problem with the network connection, the cursor will flash a few times. After a few seconds, you can see the IP address of the updated network card that is in the same network segment as the broadband router.

2. ADSL virtual dial-up access

First refer to the method in the previous "Connection and Basic Settings" to connect the ADSL MODEM and broadband router, and set the network card to "Obtain an IP address automatically ".

Then, open the IE (Internet Explorer) browser and enter the IP address of the broadband router in its address bar. The common IP configuration address of the current mainstream broadband routers is 192.168.1.1 (refer to the manual).

After entering the IP address of the broadband router and pressing Enter, you will be prompted to enter the username and password of the router to log in (some models of machines only prompt for passwords). The factory default username and password are generally It is admin (if not, please refer to the manual).

After entering the user name and password, press Enter to enter the setting interface of the broadband router. Taking Jinlang's broadband router as an example, click the menu "Internet Wizard" under the interface, and then select "ADSL Virtual Dial" item. After selecting, click "Next", and a window for entering the username and password will appear. After entering the username and password for Internet access, continue to click "Next", then click "OK" if everything is correct, and finally click "Return" "The settings are all completed.

Under normal circumstances, the broadband router will automatically dial up to access the Internet, and other connected computers can also enjoy the Internet through the broadband router. Whether you are connected to the Internet, you can go to the broadband router's settings interface and click "Running Status" → "WAN Status" to check. You have accessed the Internet normally. Here you can see the IP address, subnet mask, gateway, DNS and other information automatically obtained from the ISP manufacturer. If there is no normal connection, "PPPOE automatic (on-demand) connection (connecting)" will be displayed, and there will be no IP address and other information, indicating that the broadband router has not been connected successfully. Please check whether the user name and password are correct (note the case) , Whether ADSL is turned on, and whether the ADSL line is connected to the WAN port of the broadband router. After the connection is normal, the indicator light of the WAN port of the broadband router should be on.

Broadband operators can easily bind the MAC address of the user's network card through this access method, so that the user can only access the Internet on a single machine, but cannot enjoy the Internet. Fortunately, almost all current broadband routers provide the "MAC address cloning" function. If the broadband service provider binds the MAC address of the computer network card, you need to copy the MAC address of the bound network card in the network. The copying method is: use the computer with the bound network card MAC address to log in to the settings of the broadband router and find "MAC Click "Address Clone" option and then click "Clone".

Reference material:/net-manage/s310628.html