Sniff Wi-Fi

This week's big Wi-Fi news was Ekahau's introduction of the Sidekick , an easy-to-carry, laptop battery-conserving device designed to make Wi-Fi site surveying more elegant.  Unfortunately, it appears to do more to exacerbate Wi-Fi problems than to solve them. What is the number one problem in enterprise Wi-Fi? It surely can't be security.  Security is a hot topic, but Wi-Fi security isn't really a problem anymore.  Even security problems that Wi-Fi gets blamed on -- Pineapple hijacking, Wi-Phishing, man-in-the-middle -- either aren't problems for modern devices & applications, or are problems that extend beyond Wi-Fi. Maybe it's user density?  Or supporting a variety of devices?  Maybe it's connection issues; when moving or when the device is idle for too long? Whatever the answer, chances are it comes down to one overarching issue: different Wi-Fi devices behave differently.  Capacity testing gets done using laptops, then smartphones cause th...

There are times in life when I feel like I've been misunderstood, and I would like to just wish away the communication gap.  Unfortunately, there is no Wi-Fi Jambi, so instead I am going to use this short blog post to try to smooth things over with Jussi Kiviniemi, SVP of Ekahau. For those who are unfamiliar, Ekahau is site survey software .  You can do predictive surveying (sometimes called "planning") with it and you can do live surveying (the "walking survey") with it.  Either way, the result is a nice looking "heat map" showing Wi-Fi coverage over your floorplans, like so: Jussi Kiviniemi is the public face of Ekahau.  He's a Finnish guy and he goes to Wi-Fi conferences, hosts events, is active on Twitter , etc. There are days when I think that Jussi doesn't like me.  And being the rugged, pro-American American that I am, I take responsibility for things that happen to me. The root of Jussi's occasional distaste for m...

I recently got into a little tiff on Twitter.  In part it was an argument about blogging and reaching a broad audience, but mostly it was about site surveys.  Site surveys are hot right now, but I find that surveyors often overlook an important aspect of WiFi: different devices act differently. Conventional wisdom for WiFi site surveys is to get some site survey software , upload a floorplan and start a-surveyin'.  First predictive (letting the software estimate where coverage will go), then active (temporarily mounting access points in the locations chosen in the predictive survey and testing connectivity) and finally verification (walking the site after APs have been installed). The problem with all three types of surveys (predictive, active and verification) is that they are done with site survey software.  Site survey software is great for selling APs or pacifying execs, but it usually requires using a specific adapter.  So every time you verify conn...

Some days you wake up and say to yourself, "how can I be more like Buzzfeed ?"  Buzzfeed is popular and beloved and has an office across the street from a great Mexican restaurant.  I have a few friends and wonderful parents, but I can barely cook a taco.   What is it that I'm missing (besides venture money, a flock of ambitious MBAs and universal scorn from the intelligentsia)?  Lists!  That's what I'm missing.  Hit-trawling, crowd-pleasing lists! So here it is: the first in what hopefully will be a series of one.  A list of Three Simple Ways to Boost Your WiFi.  #LOL #cute #OMG #trashy 1) Add an 802.11n/ac USB adapter to old 802.11a/b/g laptops and desktops. Some folks in the WLAN business like to use the term "5G" to refer to 802.11ac, but I refer to 802.11a/b/g as 1st generation WiFi and 802.11n/ac as 2nd generation WiFi.  The reason I do that is because big improvements to power consumption, receive...