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A Practical Introduction to Dynamic Frequency Selection

HackRF and GNU Radio Setup Have you ever wondered why certain channels in the 5 GHz band, more specifically in the 5.25-5.35 GHz (UNII-2) and 5.47-5.725 GHz (UNII-2e) frequency bands are (almost) never in use by Wi-Fi devices? Well, it happens that, worldwide, these unlicensed frequency bands are also used by radar systems. So, for a Wi-fi device to operate in one of these bands, it must support Dynamic Frequency Selection (DFS).

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Importing Scan Results from AirPort Utility into WiFi Explorer Pro

AirPort Utility Scan Results in WiFi Explorer Pro Apple’s AirPort Utility for iOS includes a Wi-Fi scanner you can use to scan for nearby networks from your iPhone or iPad. Rather than examining the scan results in the app itself, you can visualize them in WiFi Explorer Pro (1.3) with a simple copy and paste.

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The Toolbox of a One-Man Shop

I began experimenting with app development in 2009, but it wasn't until a couple of years later, and a few hurdles in between, that things really started to pick up. My new hobby rapidly became a success story, with subsequent updates and new app releases. A success story not only for the additional income that have helped support my family, but also for the opportunity to learn, meet very smart people and make lots of good friends.

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Post Processing Captures in Airtool with Python

Airtool's Launch Script Dialog
For the past WLAN Professionals Conference in Phoenix, AZ (February 21-23, 2017), I collaborated with Brian Long for the development of a feature in Airtool to allow users to run a Python script for post processing capture files. The idea is pretty simple: after completing the capture, the user is presented with a dialog to choose a Python script for post processing the capture file.

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Honey, I Shrunk the Beacon Interval!

Beacon Airtime
Most vendors give users the opportunity to change the beacon interval. It doesn’t matter what value you choose, there is a lot of debate out there whether changing the interval to a lower or higher value offers any benefits or can actually be detrimental to network performance or stability.

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Understanding the Scan Modes in WiFi Explorer Pro

Scan Methods

Wi-Fi scanning is one of the basic functions in a wireless network. It is the mechanism by which a client device (e.g. computer) or an application discovers the wireless networks that are in range of the Wi-Fi adapter. In this blog post, I will briefly talk about how Wi-Fi scanning works, and then I will focus on how this process is accomplished in WiFi Explorer Pro, including the pros and cons of each scan mode.

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It's Here: WiFi Explorer Pro 1.0

WiFi Explorer Pro

WiFi Explorer Pro takes the code base of WiFi Explorer and adds a set of features that makes it the right tool for WLAN and IT professionals. You can use WiFi Explorer Pro for preliminary assessments, to help design and validate wireless networks installations, as well as to identify channel conflicts, overlapping, poor signal quality and other issues that may be affecting the connectivity or performance of your home, office or enterprise wireless network.

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WiFi Explorer on Setapp

WiFi Explorer on Setapp

Setapp is a new subscription service from MacPaw that will offer up to 300 handpicked, high quality macOS apps, including WiFi Explorer, for a flat monthly fee.

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Automatic data frame slicing in Airtool

Airtool Frame Slicing Preferences

Troubleshooting Wi-Fi networks at the protocol level involves the analysis of control, management, and data frames. When doing save-to-disk captures of these frames for analysis, files sizes can grow very rapidly because of the payloads that can be found in data frames. However, if you’re only interested in frame exchanges, and not so much about what the payload looks like, saving this data might be unnecessary.

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Using WiFi Explorer’s Annotations in WiFi Signal

WiFi Signal - WiFi Explorer Integration

WiFi Signal offers a simple integration with WiFi Explorer that allows it to automatically import and display annotations. Annotations in WiFi Explorer are used for assigning custom labels to a particular access point.

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