Wireless encryption WEP, WPA, WPA2 which anti-rub network better and more secure?
Two common encryption WEP, WPA
Currently, the wireless network already exists in several encryption technology, the most commonly used is WEP and WPA encryption. The first wireless LAN security protocol -802.11 Wired Equivalent Privacy (WEP), has been doubtful of most people. While WEP can prevent snoopers into the wireless network, but there was reason to doubt its safety, because WEP is very easy to crack, like a plastic lock on the door.
WEP security encryption. WEP feature uses the algorithm rc4 prng developed by rsa data security Co. . All called Wired Equivalent Privacy , used to provide protection equivalent to the wired LAN capabilities. Using the technology of wireless local area network, all clients and wireless access points use a shared secret key to encrypt. for encryption,the secret key length is 40 bit and 256 bit two kinds, the longer the key, the hacker needs more time to crack, so to provide better security.
WPA security encryption. WPA encryption that is Wi-Fi Protected Access, the encryption feature determines its invasion is more difficult than WEP, so if there is high data security requirements, it must use WPA encryption. (Windows XP SP2 has supported WPA encryption) WPA encryption as upgraded version of WEP general mechanism for IEEE 802.11,security protection is more thorough than WEP, mainly in authentication, encryption and packet inspection, etc., but also enhance the wireless network management capabilities.
WPA2: the strongest wireless encryption presently
WPA2 is a the IEEE 802.11i standard form of authentication WiFi Alliance verified, WPA2 implements the mandatory elements of 802.11i, especially Michael algorithm has been replaced by CCMP(Counter Mode Cipher Block Chaining Message integrity code Protocol)message authentication code is recognized as completely safe , and the RC4 encryption algorithm has also been replaced by AES .
In WPA/WPA2, PTK generation is dependent on the PMK, and PMK has two ways, one is PSK mode, that is pre-shared key mode (also called as personal mode).In this way the PMK = PSK; the other way will need authentication server and the site to negotiate to generate the PMK. We adopted the following formula to show the difference between WPA and WPA2:
WPA = IEEE 802.11i draft 3 = IEEE 802.1X/EAP + WEP(optional items)/TKIP
WPA2 = IEEE 802.11i = IEEE 802.1X/EAP + WEP(optional items) /TKIP /CCMP
Currently WPA2 encryption security protection is very good, as long as your wireless devices support WPA2 encryption, you will experience the life of the most secure wireless network. Even the hottest of the "Rub Card" is difficult to rub into your wireless network, users can rest assured to use.
Is there a stronger encryption mode?
Some users may have noticed, in the wireless router wireless network encryption mode, and a WPA-PSK (TKIP) + WPA2-PSK (AES) option.Is it stronger than WPA2 encryption? The answer is yes ,this really is the strongest wireless encryption method, but because the encryption mode has compatibility problems,it's difficult to connect after the normal setup so is not recommended for regular users to choose this encryption method.
Summary: Please watch your wireless network
For ordinary wireless users, we recommend you choose WPA-PSK (TKIP) and WPA2-PSK (AES) two encryption methods, they guarantee maximum security of your wireless network, is the best choice at present; but if your wireless network card does not support WPA/WPA2 encryption, then the 128-bit WEP encryption security is your bottom line.
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