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8 votes

Is wireless n only faster than mixed mode?

Yes, 802.11n-only (also known as greenfield mode) will operate much faster than mixed-mode 802.11b/g/n. When in greenfield mode, the devices will all operate at the higher rates of 802.11n without ...
pythonian's user avatar
  • 1,041
8 votes
Accepted

Why do i see Ethernet II protocol in wireshark in wireless connection?

It really is about monitor mode. Read on. 802.11 was designed to be "wireless Ethernet", and 802.11 interfaces have traditionally presented themselves to the OS as Ethernet interfaces so the OS only ...
Spiff's user avatar
  • 104k
7 votes
Accepted

Is wireless n only faster than mixed mode?

N-only (greenfield mode) is only faster when your radio environment is like a "green field". That is, when there are no G or B devices in radio range of your network, and when your devices are close ...
Spiff's user avatar
  • 104k
7 votes
Accepted

What is the current version of the 802.11r standard

Any idea what's going on with this standard? It was superceded by 802.11-2012. In 2007, task group TGmb was authorized to "roll up" many of the amendments to the 2007 version of the 802.11 ...
Ramhound's user avatar
  • 42.9k
7 votes

Why is the 6 GHz band not working with my Wi-Fi 6 card?

Why is 6 Ghz band not working? It only works with Windows 11. All Intel® Wi-Fi 6E (Gig+) products support the new 6GHz band for Wi-Fi. Usage of the 6GHz band relies on Microsoft Windows (Windows® 11) ...
DavidPostill's user avatar
  • 156k
5 votes

Is it better to choose a more-crowded WiFi channel or one with a strong competitor?

You know how many APs are on each of those channels, but you don't know how much traffic each one is sending/receiving (an idle AP doesn't use much airtime), and you don't know what non-802.11 ...
Spiff's user avatar
  • 104k
4 votes

What is the current version of the 802.11r standard

Any idea what's going on with this standard? It has been incorporated into 802.11-2012. 802.11-2012 Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) ...
DavidPostill's user avatar
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4 votes
Accepted

How to know which 802.11 standard is used by a router

Run sudo iw dev INTERFACE scan to figure out the used protocol. (requires kernel >=3.0) If you don't have it then install it with sudo apt-get install iw This answer over on Stack Exchange Unix ...
c0deous's user avatar
  • 432
3 votes

Multiple 802.11 associations with single physical antenna?

This is of course possible. Your configuration seems correct. You can connect to as many networks as the driver allows. For example, my router reports (iw list): valid interface combinations: * #...
Daniel B's user avatar
  • 62.6k
3 votes

Windows 10 does not detect Wi-Fi as metered connection

There is was a mistake in MS Docs: Correct packet is DD080050F211??00**00, where ?? is Cost Level and ** is Cost Flags Cost Levels: 00 Unknown - The connection cost is unknown. 01 Unrestricted -...
filimonic's user avatar
  • 239
3 votes

Why is the 6 GHz band not working with my Wi-Fi 6 card?

Intel uses Location-Aware Regulatory (LAR) to detect your current region and enable the allowed bands. This is handled directly by the firmware of the WiFi card. The newer firmware versions allow 6GHz ...
gosticks's user avatar
2 votes

How to tell if I'm using 802.11AC?

On my Linksys WRT1900AC I had the 2.4 GHz and the 5 GHz network SSIDs set with the same name, and my Surface Pro 3 and Lumia 950 XL, both capable of connecting to the 5 GHz band, kept connecting to ...
Kevin Schaefer's user avatar
2 votes

Why use wifi channels other than 1, 6 or 11?

The nonsense that only channels 1,6 and 11 should be used because they do not overlap, is spread on so many "expert" websites (such as http://www.wifimetrix.com/channels-1-6-11-only/ ) that it must ...
Frank Provasek's user avatar
2 votes
Accepted

What change enabled the range doubling from wifi protocols 802.11g to 802.11n?

It's primarily due to the standard adding support for multiple send/receive antennas. There's a lot of math involved that I don't fully understand, but the gist of it is that by receiving the signal ...
David Woodward's user avatar
2 votes

WIFI protocol mismatch on 5GHz

Is that even possible, 802.11b on 5GHz? Might it be some kind of fallback? Not only does 802.11b operate only in the 2.4GHz band, it also uses DSSS instead of OFDM to communicate. There is no way an ...
YLearn's user avatar
  • 1,918
2 votes

Current State of WPS (WiFi Protected Setup)

Has anyone had any luck lately getting into WPS networks? And if so, what router model and NIC/OS were you using? This I can't comment on. Does anyone have any recommendations about how to connect ...
Austin Hemmelgarn's user avatar
2 votes
Accepted

Which 802.11 frame should be used to identify clients of an Access Point [scapy]

APs can’t send Data frames (including QoS-Data and all other Data frame variants) to clients that are not associated. So any FromDS Data frame to a particular unicast MAC address is a sign that that ...
Spiff's user avatar
  • 104k
2 votes

How to connect Echo Dot to University protected wifi

Response from the University admins, in case anyone is wondering: I'm afraid as you have already said, devices such as the Amazon Echo and Wireless Printers cannot connect to Eduroam. These devices ...
Ariane's user avatar
  • 123
1 vote

802.11ax monitor mode captures very few packets

You will need to edit /etc/modprobe.d/iwlwifi.conf and set this option: options iwlwifi amsdu_size=3 The module option amsdu_size=3 increases the incoming buffer size enough to receive 12 KB ...
Dennis Mungai's user avatar
1 vote
Accepted

How to connect Echo Dot to University protected wifi

Ask your university's IT admins first. I'm not sure if whitelisting would work because Eduroam is run throughout the country and not just by my Uni, so I doubt I could ask for them to whitelist the ...
u1686_grawity's user avatar
1 vote

How often will an unassociated STA scan the network?

It is implementation specific. If you e.g. look at wpa_supplicant in Linux, here you have the possibility to control the scanning interval inside the configuration file: wpa_supplicant.conf ...
oh.dae.su's user avatar
  • 318
1 vote

Want to monitor 802.11mc Fine time measurement packets . Is there any packet sniffer that allows me to get all packets/frames from link layer?

Yes, monitoring 802.11 link layer packets is known as 802.11 Monitor Mode, and it is supported by Wireshark and tcpdump and just about any decent sniffer.
Spiff's user avatar
  • 104k
1 vote
Accepted

Can an 802.11AC router become an 802.11AD router?

In general, there's just not enough detail known about how 802.11ac routers work internally. Very likely they do SDR on some special purpose DSPs (which are different from the main CPU, for which ...
dirkt's user avatar
  • 16.8k
1 vote

Windows 10 cannot use 5Ghz to reach 100mbps

Try this, if possible with your WiFi card : Open Settings > Network & Internet Click Change adapter options Right-click the WiFi adapter and choose Properties In the Networking tab, click ...
harrymc's user avatar
  • 476k
1 vote
Accepted

Windows 10 cannot use 5Ghz to reach 100mbps

I suspect this is because Windows is using the band 2.4Ghz Your suspicious is correct. You are connected to the 2.4Ghz band, and as such your speeds are not that high. What should I do to switch ...
LPChip's user avatar
  • 60.8k
1 vote

Capturing Link layer frames

Here is what you can see with wireshark (or any other similar tool): Promiscuous mode: IEEE802.11 data frames exchanged between your client device and the access point (you won't see any traffic ...
oh.dae.su's user avatar
  • 318
1 vote
Accepted

connecting from tpye A device to b/g/n wirless network

No, they're not compatible. 802.11a is for 5 GHz; 802.11b/g are for 2.4 GHz. (802.11n could be either.) NanoStation 5 only works in the 5 GHz band. See datasheet. TP-Link W8960N only works in the 2.4 ...
u1686_grawity's user avatar
1 vote

How to capture tcp/ip traffic in wireless connection with 802.11x frame format?

In my experience, most wireless cards are not good at maintaining a working network connection while simultaneously doing 802.11 monitor mode packet capture. Usually when one tries to do both ...
Spiff's user avatar
  • 104k
1 vote
Accepted

How to decrypt 802.11 packets manually?

Let's say you have an 802.11 monitor-mode packet trace of an Wi-Fi network that was using WPA2-PSK, and you want to decrypt it manually without using Wireshark's feature. First, you'll need to know ...
Spiff's user avatar
  • 104k
1 vote
Accepted

What is the purpose of both 802.11 re-authentication and re-association while roaming?

From IEEE Std 802.11-2012, 4.5.3.4 Reassociation Association is sufficient for no-transition message delivery between IEEE 802.11 STAs. Additional functionality is needed to support BSS-transition ...
Doezer's user avatar
  • 451

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