Wireless notes: Introduction to wireless router configuration problems (II)

In the previous article "wireless notes: Introduction to wireless router configuration issues", we introduced two aspects of the wireless router configuration problem. Below, we will continue to describe the relevant content. The client and security issues are also important in the configuration of wireless routers. In addition, we have provided installation and configuration experience from other users to share with you.

Wireless router configuration problem: Adjust the client

The most important part of the client configuration is the essid id, which must be exactly the same as the ESSID value of the wireless router (including uppercase and lowercase letters ). The essid id is like a password between the wireless client and the wireless router. Only when they are identical can the wireless Nic access the wireless router, this is also an important measure to ensure the security of the wireless LAN. The ESSID identifiers for different wireless NICs are different, some are in the control panel, and some are using dedicated applications for NICs. For details, refer to the instruction manual. Generally, wireless routers of the same brand and wireless network interfaces use the same essid id default value. You do not need to set the default value. However, this may cause some security risks for commercial users. We recommend that you change the essid id.

Other configurations of the wireless client are very simple. In the past, annoying network settings can be put aside. Open the TCP/IP attribute of the wireless network adapter in the network attribute of the control panel, set the IP address of the wireless LAN adapter to automatically get, or keep it in the same network segment as the wireless network node. Now, if the wireless LAN adapter can connect to the wireless network node normally.

The laptop can access the Internet normally. If the connection fails, check the network settings or adjust the location of the wireless network node.

At this point, the installation process is not complete. At this time, although the broadband sharing function is implemented, it is very insecure. If your neighbor has a wireless network card installed, he will be able to intrude into your wireless LAN, and even use your broadband to download BT. So I need to encrypt the network.

Wireless router configuration problems: good security

WEP encryption is the most common encryption method in the 802.11 series wireless LAN. I log on to the management interface of the wireless LAN node again through the IE browser, find the security option, and choose to enable the WEP encryption function (this function is usually disabled in the factory settings of the wireless network node ), enter a hexadecimal character (the character must be 0 ~ 9 or ~ F) as an encrypted string (the encrypted string must be well remembered and cannot be connected to a wireless network node after it is lost), save the settings and restart the wireless network node (depending on the WEP type, the number of digits of the encrypted string is also different. Usually 64-bit encryption requires a 10-digit string, while 128-bit encryption requires a 26-digit string)

After the restart, the wireless network adapter will not be able to connect to the wireless LAN node. Now you need to modify "wireless network connection attributes ". Select "Network neighbors", "properties", and "Wireless Network Connection Properties", and then select "wireless network configuration ". Find your own wireless network node in the available network. If there are no other wireless network nodes nearby, only one network should be listed here. Otherwise, other nearby wireless networks will also be listed.

Next, click "attribute" to activate "Data Encryption (WEP enabled, enter the encrypted string in the "Network key" and "Confirm network key" columns below, and then click "OK ", the wireless network adapter can be correctly connected to the wireless network node.

Wireless router configuration problems: Experience Sharing

Generally, the 802.11 series of Wireless LAN products have good compatibility. Most wireless NICs and wireless routers do not have compatibility problems. But for stability considerations, for high requirements, I suggest using the same brand of wireless routers and wireless network interfaces.

The load-bearing wall of reinforced concrete has a strong obstacle to wireless signals. Therefore, for the "duplex" residential and Villa-type home environment, the best solution is to configure a wireless router for each layer. In practical application, the indoor AP coverage can be up to 30 meters.

The actual usage rate of 802.11b is only about 40% of the nominal value, and the converted data transmission rate is about 64/128 kb/s. If it is set to-bit WEP encryption, the transmission rate will be further reduced, therefore, you must pay more attention to interference during use and try to stay away from microwave ovens, cordless phones, and Bluetooth devices.

If the wireless signal is suddenly weak, no physical changes are made. You can try to change the wireless channel or add an external antenna.

Windows XP has built-in support for WLAN, Which is plug-and-play and easy to use and set. Windows 98, Windows ME, and Windows 2000 are not as stable and easy-to-use as Windows XP for wireless LAN, and occasionally conflict occurs. Therefore, if the hardware configuration is high enough, try to use Windows XP. At the same time, it should be noted that the operating systems before Windows 95 (including Windows 95) do not support Wi-Fi.