With the maturity of computer technology and electronic information technology, electronic products have entered thousands of households at an unprecedented speed. With the improvement of the network, the demand of home users for the Internet is increasing. If we can organically stop the connection of complicated electronic products and form a home LAN, we can share software and hardware resources, rationally apply network resources and meet the needs of family members. How to choose a simple and effective method to stop the construction of home LAN is the topic discussed in this paper. First, networking preparation Before setting up a home wireless LAN, don't analyze it according to the needs of your family. This paper ends with a basic desktop, a notebook and a mobile phone (supporting WLAN). The simplest and most convenient way to build a home wireless LAN is to choose a peer-to-peer network, that is, take the wireless router as the center and other computers stop communicating with the wireless router through the wireless network card. Purchase equipment 1) choice of modem and router. According to the broadband access mode, when users access broadband through telephone lines, they must purchase both a modem and a wireless router. When users use optical fiber access, they only need to buy a wireless router to enjoy the Internet. When choosing a modem, you only need to match the ADSL broadband transmission rate, and you can complete digital-to-analog conversion and broadband Internet access. As for the wireless router, we should not only consider its transmission rate, but also consider the coverage of signal strength to ensure that there are no dead ends in the home. 2) The choice of network card. For desktops, you need a wireless network card to access the wireless network. Wireless network cards are divided into built-in PCI wireless network cards and external USB wireless network cards. The advantage of PCI wireless network card is that it directly exchanges data with computer memory, reducing the burden on CPU, but the signal bearing position is not adjustable, and it is easy to be interfered by computer host and dropped. The wireless network card with USB interface, plug and play, strong heat dissipation performance, fast transmission speed and low price, is the first choice for expanding the desktop. Location of the wireless access point The wireless access point, that is, the wireless router, converts the signal of the wired network into a wireless signal [2]. In the home wireless LAN, we should first consider the location of the wireless router. Wireless signals can pass through the wall, but their signals will rapidly decay with the number, thickness and location of obstacles. In order to make the wireless signal cover the whole home area, it is necessary to let the signal directly pass through the wall or form an open direct signal transmission. In the actual equipment wiring layout, it is necessary to fine-tune the position of the wireless router according to the house structure of the family and whether there are other signal interference sources. Second, the setting of wireless routing This paper introduces the setting of wireless router based on mobile PPPOE fiber access and TP-LINK TL-WR740N. Basic connection First, insert the optical fiber interface into the WAN port of the wireless router connected to the power supply to complete the hardware connection; Secondly, search for wireless signals, click the control panel in the menu, double-click to open the network connection, double-click to open the wireless network connection in the network connection window, click to view available network connections in the lower right corner of the General tab, click to refresh the network list, and finally click Connect to complete the connection between the computer and the wireless router. In this process, ensure the automatic acquisition of IP address selection in wireless network TCP/IP; Thirdly, log in to the Web management interface provided by the router and enter the default address "192 5438+068.438+0.1"in the reader. Stop all settings 1) Click Settings to stop the guide setting. Setting up a tour guide can help us stop router settings locally. In the dialog box for setting up a tour guide, click Next. 2) Select the network connection mode. In the window of setting tour guide-Internet access mode, three most common Internet access modes are provided for selection, namely PPPoE(ADSL Virtual Dialing), dynamic IP and static IP. Since PPPoE is our most commonly used way to surf the Internet, such as Telecom, Tietong and Netcom, we choose this way and click Next. 3) Enter the ADSL account number and password provided by the network service provider, and click "Next". 4) wireless basic parameter setting, setting network password can ensure the safe use of the network. In the wireless settings window, * * * sets two contents, namely, the basic parameters of wireless network and the setting of wireless security options. "Basic parameters" include wireless status, SSID, channel, format and bandwidth, and "wireless security options" include not opening wireless security, WPA-www.bfblw.com PSK/WPA2-PSK paper network and not modifying wireless security settings. Here, users are only required to set PSK password in wireless security options to ensure network security, and other options are set by default. Click Next to complete the setup and complete the establishment of wireless local area network. Other functions are set in the Web management interface of the wireless router. In addition to setting the tour guide function, there are many function settings, such as DHCP server options and security settings. DHCP service is the basis of peer-to-peer network settings, which can assign IP addresses to any wireless device connected to a wireless router. The router software provides two states: "Not Enabled" and "Enabled". If the acquiescence is set to "Enable", when the user uses it, the router will automatically dial the IP address to stop the network connection, and the user does not need to make any connection settings, which is another advantage of the wireless router. Ping An Settings provides a network firewall, which can filter the domain names set by users and has the ability to prevent attacks, thus ensuring its own security. When setting up a wireless router, users can stop all settings according to their own needs. Third, the defects of the home wireless LAN and the lack of certain knowledge requirements for network construction, for the home wireless LAN to stop building and maintain a successful wireless LAN construction, it will certainly meet the needs of users and complete the maximum application efficiency of the equipment with the most economical hardware configuration. This requires users to have a certain understanding of the establishment of wireless local area network to prevent conscious purchase of networking equipment, its application process or economic problems. Secondly, the maintenance of WLAN is also a technical index that users must master. If users know some basic knowledge of network construction and some minor problems or obstacles in daily use, I can completely eliminate obstacles in a short time without affecting users' use. The construction cost of home wireless LAN is high. In the construction of home wireless local area network, the core equipment of building wireless local area network is wireless router. Generally speaking, the market price of wireless routers is higher than that of wired routers, and when building a wireless LAN, if it is a desktop, you need to buy a wireless network card, which undoubtedly adds a sum of money. The signal stability of WLAN is relatively poor. Wired network stops signal transmission through hardware transmission medium, and the signal is stable and will not be affected by external factors. However, WLAN relies on radio waves to stop transmission. These radio waves are installed and stopped by wireless transmission, and the signal quality will be relatively poor when they are far away or blocked by buildings. Secondly, the speed of wireless network is slower than that of wired network. Due to the limitations of these factors, it will definitely affect users' use of the network. Poor security At this stage, wireless LAN technology is not very mature, and the security of network signals has become a hidden danger. Radio waves do not need to establish a physical connection channel, and the divergence of wireless signals can easily be monitored by any terminal equipment within the signal coverage of wireless access points, resulting in the leakage of communication information, which has become the most fatal weakness of wireless local area networks.