Reddit reviews 2000mW 2W 802.11 G/N High-Gain USB Wireless Long-Rang WiFi Network Adapter with Original Alfa Screw On Swivel 9dBi Rubber Antenna and Suction Cup Window Mount Dock

I recently researched this and found that the Alfa brand USB adapters are most commonly recommended due to good performance and support in Linux (also listed in the aircrack link by xaocon). Keep in mind though that some of the most recommended ones, like this popular one only supports b/g WiFi networks, so if you want to play with a n network you have to get an updated model. I have this one and it works well but doesn't pick up as many WiFi points as the first one linked..

After reading this last week I had a go at doing it myself. I bought one of these bad boys, plugged it into my laptop, set up a monitor device like so:

sudo iw wlan1 interface add wlan1mon type monitor

Then listen for wifi clients like so:

sudo tshark -i wlan1mon subtype probereq

I can see the neighbours coming home, people turning their laptops on etc. The best bit is that old iPhones leak loads of info by broadcasting saved ESSIDs, I can see three locations where the girl next door has been on holiday and via a reverse SSID search I can see where one of her friends lives.

Consumer WiFi equipment should leak less information, it's too fucking chatty.

Might be a good opportunity to build and test a DIY high gain directional antenna like a cantenna or yagi. Lots of geek cred and also one of the least expensive options. You can do this on both ends, effectively making a wifi tunnel:

Cantenna: http://www.wikihow.com/Make-a-Cantenna

Super Antenna: http://www.instructables.com/id/10--WIFI-16dBi-Super-Antenna-Pictorial/

Yagi Antenna: https://www.amazon.com/Blackzebra-External-Wireless-Extender-Directional/dp/B00KL6X9M4/

20 dBi Antenna: https://www.amazon.com/KW-3016N-Outdoor-Wireless-Adapter-Antenna/dp/B019Z28CE4/

Another option is high powered (400-2000mW) wifi adapters. Alfa, Ubiquiti, Amped, ASUS, and other companies make them:

Alfa 2000mW adapter (I own this): https://www.amazon.com/High-Gain-Long-Rang-Alfa-9dBi-Mount/dp/B0038Q4AIG/

Amped High-power PCIE adapter: https://www.amazon.com/Amped-Wireless-PCI20E-AC1200-Adapter/dp/B00I9AS1JA/

The best paid option in my opinion is a pair of Nanostations from Ubiquiti setup in bridge mode

Edit: I think you are looking for an inexpensive option, so I would check out the DIY options above

I've had the best luck with Alfa adapters. I currently have 3 of these: http://www.amazon.com/High-Gain-Long-Rang-Alfa-9dBi-Mount/dp/B0038Q4AIG/ref=sr_1_3?ie=UTF8&qid=1416321127&sr=8-3&keywords=alfa+awus036nh

Here's a cost effective package:

http://www.amazon.com/gp/product/B0038Q4AIG/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1

Works so well I bought a second for MIM attacks. Built in support in BT5 and Kali distros out-of-the-box.

Here is a USB Wifi adapter with a really large antenna. It only supports wireless N, not the newest AC. But, the high gain antenna it comes with is great if you are farther away from the router.

I should say, that's with stock antennas... I'm sure the range would be quite good with some aftermarkets

The other option would be to get something like an Alfa network card and big boy antenna... I've picked up AP's like half a mile away with one. That said, they're a bit clunky.

https://www.amazon.com/gp/aw/d/B0038Q4AIG/ref=mp_s_a_1_2?ie=UTF8&qid=1493156493&sr=8-2-spons&pi=AC_SX236_SY340_FMwebp_QL65&keywords=alfa+network&psc=1

I've been buying these for my linux systems. They work great and take no configuration (Tested on Debian Stable/Testing, Ubuntu 12 and up).

have had good luck with these myself, https://www.amazon.com/High-Gain-Long-Rang-Alfa-9dBi-Mount/dp/B0038Q4AIG/ref=sr_1_2_sspa?ie=UTF8&qid=1526286792&sr=8-2-spons&keywords=alfa+wifi&psc=1

I don't see any problem with you using their wireless if you're in range, especially if you're a student there. You could try something like this - https://www.amazon.com/High-Gain-Long-Rang-Alfa-9dBi-Mount/dp/B0038Q4AIG/ref=sr_1_17?ie=UTF8&qid=1481462090&sr=8-17-spons&keywords=alfa+networks+awus036h&psc=1

While you might be correct in that there might be some EMI in your case - maybe one of your components lacks a filter cap or ferrite choke or something similar - it's just as likely you've just got a bum wifi adapter.

TP-Link doesn't make horrible gear, but it's cheap as chips and some of it goes bad before its time as a result. Let me suggest something to you that might not be a solution I suggest to everyone:

Take a look at this.

Now, there's plenty of people that don't prefer USB adapters to PCI-E external ones, but honestly, they're more versatile and easier to install, as well as not taking up room in your case. Alfa makes probably the best USB adapters anyone does, and I have significant experience using and recommending their products. I've had an AWS036H for over two years, abused, even put outdoors for a time, and it just won't die.

Another benefit is that I guarantee the gain on this setup completely kicks the ass of anything you were using before. Your games will run with better ping, I bet you. IMO, it's an upgrade.

I see, you want to build a man in the middle wifi hotspot! Yes, this is possible, but you have to get a network adapter that's capable of doing this. I'm not sure which Pi you're using, but the built in wifi adapter on a pi3, isn't suited for this type of activity.

This is a great device, below, that is capable of being used to learn a lot about wifi networks!

https://www.amazon.com/dp/B0038Q4AIG?psc=1

TP-Link is good and also https://www.amazon.com/dp/B0038Q4AIG/ref=cm_sw_r_cp_apa_7VsJAbC9EMVDW