![]() This pops up the Capture Settings window. Wifi Sniffer Windows 7 FreeĬheck the wireless adapter of interest, and uncheck the others.Click the New Capture button, then the Capture Settings button. Otherwise, PROSet is apt to take control of the adapter out from under Netmon, and you will wind up sniffing the wrong channel.Launch Netmon. You'll have to log off and back on again after installing.Sniff wireless packets from a channelNote: if using PROSet for Win7, set it to 'Use Windows to Manage WiFi'. If running Win7 64bit, get and install NM34圆4.exe. ![]() A Cisco CB21AG with Atheros driver 1.0.0.120 - this also reported weird data rates (1Mbps showed up as '116 Mbps' and 11 Mbps as '124 Mbps'.)Install Netmon 3.4. Driver reports 11n support (not tested.) RSSI values and data rates look sound. It seemed to report all packets as having an RSSI of -50, and as being of data rate '3.5 Mbps'. This driver says that it supports 11n (which function I didn't test). A Linksys WUSB600Nv1 with Ralink driver 3.0.10.0. These adapters works well with 11a/g but do not support 11n. Netmon is no longer supported as of Windows 10.Tested adapters/drivers. ![]() As to Vista/Win8, experience is mixed a reliable source reports that wireless sniffing does work in 64-bit Vista on a Macbook with BCM43xx 1.0 adapter. One who wishes to perform an over the air capture should use a more functional sniffing method, such as Mac OS X, Wireshark with AirPcap, or OmniPeek with a MediaTek USB adapter.Netmon 3.4 is supported with XP SP3 however, it does not support wireless sniffing when running XP. The file saved from Netmon can be read by latest (1.5 and above) Wireshark, though not in OmniPeek.Since Netmon is no longer supported in later versions of Windows, and since it is unable to capture frames modulated in 802.11n or 802.11ac, it is of very limited utility nowadays. IntroductionWith Microsoft Network Monitor (Netmon) 3.4 in Windows 7, one could perform 802.11a/b/g wireless sniffing, using a standard wireless adapter. ![]()
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