Sniff Wi-Fi

After eight and a half years, one hundred forty posts, and a shade under one-and-a-half million page views, it is clear to me that one topic causes more controversy than any other on this here Sniff Wi-Fi blog: disabling low OFDM rates (such as 6 & 9 Mbps). Wi-Fi vendors tell you to do it. CWNP trainers tell you to do it. Other bloggers tell you to do it. I (and a very, very small group of other hardcore Wi-Fi professionals) tell you   not to   do it . But this blog post isn't about re-litigating that controversial issue (for the most part).   This blog post is about telling you why I **did** disable the 6 & 9 Mbps data rates on a recent Wi-Fi optimization project. Given the subject matter of this blog post, I feel compelled to begin with some shameless self-promotion: if you have a problematic Wi-Fi deployment (or if you're in the "design" phase and you want to avoid having a problematic Wi-Fi deployment, or if you would like training on how to ...

A friend of mine recently posted a message on Twitter telling people that his email had been hacked.   I told him that his email had most likely NOT been hacked, and it took all of thirty seconds to figure that out.   A lot of people believe that their email has been hacked when they receive messages like this: From: A Friend To: Me Subject: Has your email been hacked? Body: [Forwarded message from "You" that you didn't actually send.] When someone receives an email from "You" that you didn't send, it could mean that your email is hacked, but it probably doesn't. Here's how to check: Ask your friend to click or tap on Your Name (the "From" in the email). If your real email address shows up, then the email was sent from your real email account.  That means your email has been hacked. If an email address that is NOT yours shows up when your friend clicks/taps on Your Name (in the "From" field of the email), then...