Application of Wireless Network Security Technology

Application of Wireless Network Security Technology

Modify the default account and password of the wireless router

The default account and password set by the wireless router when it leaves the factory are usually relatively simple and well known, so the default account and password of the wireless router must be modified in time and changed regularly to prevent illegal users from logging in to the wireless router. Modify the relevant parameters so that users in the wireless LAN can be accessed and *.

Set service area identifier (SSID)

SSID is used to distinguish between different wireless networks, and a SSID is made up of up to 32 characters. In general, wireless routers have a default SSID logo when they leave the factory. If the SSID identification information is not modified in time, conflicts may occur with other wireless networks. When the wireless terminal accesses the wireless router, it must provide a valid SSID, and only matching can access it. AP and wireless routers broadcast their own SSID numbers to all wireless clients by default, making it easier for users to access the appropriate wireless network. The function of broadcast SSID not only facilitates normal users, but also creates conditions for illegal users to access the network, so the "allow SSID broadcast" function of AP and wireless network should be cancelled in time, so that illegal users can not search the SSID number, so as to reduce the probability of the network being * * and increase the security of the network.

Turning off the SSID broadcast of the access point in the wireless network can hide the user's network to a certain extent, but it can not rely too much on SSID hiding. This is because the hidden SSID simply removes the SSID from the access point beacon, which is still included in 802.11 related requests and, in some cases, in discovery request and response packets. Therefore, eavesdroppers can use legitimate wireless analyzers to quickly discover the SSID of connected network users in a busy network.

Start the encryption settings for the wireless network

Wireless devices all have the functions of WEP encryption, WPA encryption and WPA2 encryption, in which WPA2 uses a 256bit key, and during the broadcast of the packet, the WPA2 encryption key is constantly changing, so it has better security, so WPA2 encryption should be enabled first.

Set up MAC address filtering

MAC address filtering is a common security measure in wireless network security measures. Turning on the MAC address filtering function of wireless devices can refuse illegal MAC addresses to access the wireless network and effectively control the access rights of wireless clients. Wireless MAC filtering can make wireless network more secure.

Enable MAC address filtering, although it adds a layer of security to control which clients can link to the wireless network. However, eavesdroppers can easily see the authorized MAC address on the network and then change the MAC address of their computer.