Wireless Network security threats you need to do so

The development of wireless networks is quite mature, but for our wireless network users, we will give a detailed introduction to how to set various wireless network security problems.

As the prices of low-end wireless network devices continue to decline and the operation becomes easier, low-end wireless LAN networks have become increasingly popular in recent years. To facilitate resource sharing, wireless printing, and mobile office operations, we only need to spend hundreds of dollars to buy an ordinary wireless router and a wireless network card device, you can quickly build a simple wireless LAN. However, the popularity of low-grade Wireless LAN networks is also likely to pose a great threat to the information security of the Organization. In this case, how can we resolve the security threats of low-grade wireless networks and enjoy the fast and convenient networking?

Poor Network Security

Connect to the residential broadband network in a wireless way and share the Internet access through the broadband network, we usually only need to connect the WAN port of the low-end wireless router with the exchange port of the residential broadband network through the common twisted pair wire, and then follow the instructions to set the connection port parameters of the wireless router, you can access the Internet. By default, the DHCP service is automatically enabled for low-end wireless routers. After we correctly install the wireless network card device on a common computer, you can automatically connect to the wireless LAN without any parameter settings. However, while enjoying the convenience of networking, the signal coverage of low-grade wireless routers can reach as far as 300 meters. If security measures are not taken, then, normal computers with wireless network card devices installed within 300 meters can be automatically added to the Local Wireless LAN network, so that the local wireless LAN is prone to illegal attacks.

At present, the formation of low-grade Wireless LAN has the following security disadvantages:

1. inadequate security mechanisms

Most low-grade Wireless LAN uses the WEP protocol with general security protection performance to encrypt and transmit wireless Internet signals. However, WAP protocol with high security performance is not used to protect wireless signal transmission. Even if common online users use the WEP encryption protocol and WEP key settings, illegal attackers can easily crack encrypted signals through professional attack tools, this allows you to easily intercept information such as the customer's Internet address, network ID, wireless channel information, and WEP Key, attackers can easily steal privacy or perform other illegal intrusion operations on local wireless LAN networks.

In addition, low-grade Wireless LAN almost does not support system log management, intrusion Security Detection and other functions. It can be said that the current security mechanism of low-grade Wireless LAN is not sound yet.

2. Physical isolation is not allowed.

Low-grade Wireless LAN is directly exposed to the outside world from the moment it was successfully established. Wireless Network access cannot be effectively isolated from physical networks, and various intentional and unintentional illegal attacks may exist at any time, the privacy information in the wireless LAN will also be stolen and accessed at any time.

3. Insufficient user security awareness

Low-grade Wireless LAN often only supports Simple Address binding, address filtering, and encrypted transmission functions. These basic security functions have little protection to prevent illegal attackers. However, some users who are not familiar with wireless networks can quickly achieve mobile office and resource sharing, we often do not hesitate to choose low-end wireless LAN with low networking costs and simple management and maintenance operations. As for the security performance of the wireless LAN, we believe that these novice Internet users will hardly consider it. In addition, the beginner users who are not familiar with wireless networks have less knowledge about network security. These users seldom consciously perform security settings when using wireless networks.

4. Poor anti-external interference capability

During the work process, a wireless LAN usually uses a specific working frequency band. When there are too many wireless networks in the same working frequency band, the signal coverage will overlap, this will seriously affect the strength of valid signals, and may ultimately affect the signal transmission stability of the wireless LAN. In addition, during the transmission of wireless Internet signals, it is particularly vulnerable to block or interfere with buildings such as walls, which will also affect the stability of the wireless LAN. For low-grade Wireless LAN, the anti-external interference capability is even worse. Obviously, such wireless LAN cannot meet the requirements of high-quality network access applications.

Resolve wireless network security threats

Although low-end wireless LAN may bring us a variety of unexpected security threats, it may cause a lot of security risks to the information system of the organization, but for small-scale units that do not have high security requirements, low-level wireless LAN can still be used. After all, this type of networking costs are very low. More importantly, effective measures can minimize the security threats of low-level wireless LAN, this allows users of small organizations to enjoy convenient networking.

1. Check for security

In order to keep abreast of the security status of the wireless network of the Organization, we should regularly check the Intranet and Internet usage of the Organization and the working status of core network devices, and make a detailed inspection record. At the same time, we should also intensify our efforts to dynamically monitor the working environment of wireless networks in the areas near the wireless LAN of the Organization. In some cases, we also need to evaluate and audit the network system security of the Organization. In addition, for workplaces involving core privacy information of the Organization and important network applications, electromagnetic shielding and other measures should be taken in a timely manner to prevent illegal network intrusion or attacks.

2. publicize security

Low-grade Wireless LAN can easily affect the security of the internal network of the Organization. Therefore, the person in charge of the organization must prepare a wide range of network security information, regularly publicize and train wireless Internet access security knowledge at or below the Organization, so as to strengthen the security awareness of every wireless Internet access user. At the same time, it is necessary to conduct targeted special rectification of network security, ensure that all employees of the Organization are ideologically highly aware of wireless network security.

3. Security to management

As the saying goes, "there is no rule, it is not a square area". To ensure the security of the use of wireless LAN, we also need to make reasonable provisions on the use of wireless network devices, manage wireless Internet users reasonably, standardize the working mode and security settings of wireless network devices, and clarify the use scope and access permissions of internet users. For example, do not connect laptops with important unit information to the wireless LAN. Do not share the information in the wireless LAN. do not attach mobile devices to the wireless LAN, protection of the workplace that stores and processes core information must be shielded.

I believe that, after we are aware of the various security threats to low-end wireless LAN, we can still enjoy the convenience of wireless networking by taking effective security measures, so that low-grade Wireless LAN can also provide us with "services ".