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wireless definition
1 replies.
wireless definition
14-10-2008 05:32 PM
dear,
what is the definition of wireless?
and what the packet structure of the wireless?
thanks
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Re: wireless definition
10/15/2008 12:34:00 PM
Dear happyheart
As long as i know the wireless is another way of network communication without cable.
However this newly invented technology ( actually it is old ) bases on its own protocols to transmit data over the network.
With a wireless connection, u need to have one wireless access point which broadcasts its signal in its range.
the access point names are known as BSSID...etc ( i forget another one, sorry guys ). This feature is already existed in the Linksys router of CISCO. To make it more secured, there is also a key generated by the server ( wireless access point ), and if any clients ( wireless devices ) input the real key into the box, then they are connected; because the router plays a role as the DHCP server and assign the IP to its client requests.
There are also some algorithm of encryption data over the wireless network :
- WEP : check the RFC at http://www.ietf.org/rfc/rfc3580.txt
- WPA
- ....etc
I recommend u to read the RFC for clearer and download EBOOK about wiress hacking; you'll find that these algorithm are not secured and reliable enough.
Even though the wireless connection comes in place, the TCP/IP protocol is still the protocol to make all work.
Example : You data is sent from ur wireless device, go thought the TCP/IP and then encrypted before transmitted on air to the wireless access point. the wireless access point received the encrypted data, then decrypt it and passed it up to TCP/IP to make it passed to the application.
You see, even though we have a wireless connection, the TCP/IP must be in place to make all works
Thanks
/AmeL
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