"fake" Ethernet: the hardware/driver translates the 802.11 headers into Ethernet headers so that the whole packet looks like a normal Ethernet packet.(There are variants of this in which "radio information" such as signal strength can be provided as well.) "real" 802.11: the hardware/driver provides the actual protocol data that travels over the air, complete with 802.11 headers.When capturing with Wireshark (or other tools using libpcap/WinPcap, such as TcpDump / WinDump) there are two ways in which 802.11 can be supplied by the system and stored in a capture file: XXX - add a brief description of 802.11 history 802.11 vs. 802.11f Inter-Access Point Protocol (IAPP).802.11d International (country-to-country) roaming extensions.802.11e (Quality of service, packet busting).802.11h (Spectrum and Transmit Power Management).802.11i (Security WPA1 and WPA2) No change to data rate.802.11n Enhancements for Higher Throughput.802.11b (11MBit/s 2.4GHz) Second generation of WLAN equipment, and the first generation to receive widespread use allows 1, 2, 5.5 and 11 Mbps.802.11 (2MBit/s 2.4GHz) First generation of WLAN equipment allows 1 and 2 Mbps.See the CaptureSetup/WLAN page for instructions how to capture from WLAN's (including monitor mode), and see the CaptureSetup page for general information on capturing on WLAN's and other media. The 802.11 protocols specify a wireless shared network, which means that the maximum bandwidth is only available to one user at a time. IEEE 802.11 sends network packets from the sending host to one ( Unicast) or more ( Multicast/ Broadcast) receiving hosts. It is specified by various IEEE 802.11 specifications. It represents a whole collection of protocols within the same family of Ethernet and Token Ring. The abbreviation Wi-Fi stands for Wireless Fidelity, and resembles the Hi-Fi acronym. Wi-Fi, or IEEE 802.11, is the standard for wireless LANs, or WLANs.
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