Wireless
Hello everyone! :-) Today I'll write a post I had in mind for some time, we will talk about wireless ...
will make a brief introduction to this fantastic technology, which to me keen dala since its inception. and tell you that GOOD READING!. Tuesday, March 17, 2009
Nintendo Club Point Generator
In computing, the term wireless (from wireless) indicate the lines of communication between electronic devices, which do not use cables. Traditional systems based on wired connections are called wired. Generally, the wireless
uses low-power radio waves. In
computer, wireless local area network , short-term English in WLAN indicates a " wireless local area network." The acronym WLAN is generically referred to all local networks of computers that do not use link cable to connect to each other hosts on the network.
The types of wireless network are three:
- PAN (Personal Area Network), at the household level
- WLAN (Wireless Local Area Network), the strict
- WAN (Wide Area Network) wireless
- BWA (Broadband Wireless Access), which is experiencing widespread thanks to WiMAX technology Uhmmm ... WiMAX a better technology sometimes write a post about .....
can communicate normally with 30 clients within a radius of 100 m . However, this feature varies depending on several factors, positioning, obstacles and interference with other electromagnetic fields , the power of the devices. To increase the transmission distance, there are repeaters that amplify radio signals. In experimental conditions, wireless networks can reach a capacity of several kilometers (WiMAX).
The main problem of wireless networks is the
security. The radio signals, being released into the ether, can be easily intercepted. It is therefore necessary to adopt counter-encryption-type to ensure confidentiality. The standard originally proposed for this task was the WEP 40 or 104 bits, but the weakness of this protocol, which made him very insecure imposed soon replace it with a WPA, which uses a variant of WEP in which the main weaknesses have been removed.
WPA2 Protocol, ratified in 2004 , is based on the algorithm of the AES encryption provides high security but is not compatible with previous generation devices.
For me and a good wireless technology that will improve over time definitely wanted to say a little pearl of wisdom, let us stop to protect wireless networks so the concept of total security in computer science there is also the WPA can be pierced (later write a post) frees the network to allow anyone to connect anywhere, as is the case for some time in many places in America ........
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