Why do wireless bridges use encryption?

When selecting or understanding a wireless bridge, look at its specification and you can see one such thing: security or encryption. Why do wireless bridges need to be encrypted? The professional transmission product & service provider Feng Runda's technician came to you to explain.

Wireless bridges currently occupy a place in the field of wireless surveillance. Many security engineers use wireless bridges to perform monitoring and are operating normally after they are installed. However, after a few days of operation, there are large network delays and data loss. The image is stuck and so on. Many customers will question whether the stability of the bridge itself is a problem, but after analyzing the operating data of the bridge, it is found that the bridge itself has no hardware or software problems, but it is found that there are many devices as access points. In the case where wireless terminals are connected, these devices are some other wireless terminals, and more often are mobile phones.

Subsequently, after many analysis, it was found that many customers ignored the issue of wireless security encryption after just installing the wireless bridge.

In today's age where WiFi is virtually impossible, most smartphones support a/b/g/n wireless protocols and even support higher levels of wireless. Although there are many bridges that monitor and use 5.8G, it seems to be very clean and less interference, but an open wireless signal broadcast is bound to open up many useless terminals automatically, increasing the visibility of wireless signals. Wireless bridge load. As time moves, more and more terminals are accessed, and the efficiency of wireless network bridge self-network signal transmission will be reduced. Packet loss and delay will occur.

To solve the above problems, it is necessary to encrypt the wireless bridge, and even through some special means to ensure that other wireless terminals cannot access. The common encryption method for wireless bridges is as follows.

1. MAC Address Filtering MAC address filtering uses a hardware-controlled mechanism to identify access wireless terminals. Because the wireless terminal's network card has a unique MAC address, if the MAC address filtering mechanism is enabled, the wireless bridge allows the terminal to communicate only when the MAC address of the client is a valid MAC address.

2. The SSID hidden SSID can generally be obtained through terminal scanning. The wireless bridge supports the hidden SSID function, so that the wireless terminal cannot automatically scan and acquire the SSID, which can prevent the terminal from accessing the wireless bridge.

. 3, WEP encryption <br> <br> the wireless networks based encryption mechanism 802.11 shared key is referred to as "Wired Equivalent Privacy WEP" technology. WEP is a 40-bit or 128-bit encryption method based on the RC-4 algorithm. The mobile terminal and the wireless router can be configured with four WEP encryptions, which can be used in turn to encrypt and transmit data, allowing the encryption key to change dynamically. High encryption level, basically meet the needs of ordinary business users.

4, 802.1x authentication technology 802.1x refers to the port access control technology and is an important part of the 802.11i wireless security protocol family. It is an enhanced network security solution for wireless data networks. When the wireless terminal is associated with the wireless bridge, whether the wireless bridge service can be used depends on the 802.1x authentication result. If the authentication succeeds, the device opens the logical port for the terminal. Otherwise, the user is not allowed to access the Internet.

5. AES Algorithm Encryption AES refers to the advanced encryption standard algorithm and is an important part of the 802.11i wireless security protocol family. AES is a symmetric block encryption technology that provides more advanced encryption performance than the RC-4 algorithm in WEP/TKIP. AES is more random. It has higher security than WEP. Attackers need to obtain a large number of ciphertexts, consume a lot of resources, and spend more time deciphering. Using AES encryption, the security of the wireless network will be greatly improved, which can effectively prevent external attacks.

All wireless bridges produced by Fengrunda support MAC address filtering, WEP encryption, 802.1x authentication technology, WPA, WPA2 and other encryption methods to ensure the security of wireless networks and ensure the best use of wireless bridges.

A series of devices used to change or keep a car moving or backward is called a car Steering System.

The function of the steering system is to control the driving direction of the vehicle according to the wishes of the driver. Car steering system is very important to the safety of vehicle, so the auto parts of steering system are called security parts. Automobile steering system and Braking System are two systems that must be paid attention to in automobile safety.

Automotive steering system is divided into two categories: mechanical steering system and Power Steering system.
The steering system, which is entirely controlled by the driver's hand force, is called a mechanical steering system.

The steering system manipulated by force is called the power steering system. Power steering system can be divided into hydraulic power steering system and electric power steering system, as well as pneumatic power steering system.

Steering System

Steering System

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