Last week, thousands of IT professionals and students joined us for CORE-IT, a free training/mentoring/badging event that we'd begun planning back in 2019. S...

CORE-IT is a FREE virtual conference offering training on core tools, protocols, and practices for the IT/cyber industry professionals and students. Register...

See the legitimate DDoS on PG&Es site after they announced that power would be shut off to upwards of 800,000 customers in October 2019.

Packet Challenge: Look it up in the Dictionary - download the trace file and test your skills on this Packet Challenge.

Get familiar with HTTP's 301 redirection process to a secure connections. Download the sample trace file and follow along.

After a painfully slow LinkedIn launch, I grabbed the traffic and saw some definite issues in the TCP handshake processes.

Wireshark is a piece of clay. In this blog, Laura teaches you how to customize the Expert Information - an often overlooked feature.

A sexy features in Wireshark, for sure - global mapping based on MaxMind's GeoLite2 geolocation database files! Configure and use it today!

It was supposed to be a simple DNS name error trace file... but when I was suddenly redirected to a malicious URL, I went down a rabbit hole

Should you be concerned about Spurious Retransmissions in a trace file? What triggers these indications and what should you do?

This profile is primarily geared towards troubleshooting TCP communications with a buttons to detect application errors, as well.

Get the free Troubleshooting Cheat Sheet that we are handing out at Cisco Live.

The NSA tool leak continues to plague the world as NotPetya takes down Ukranian computers, and we meet Hal999999999 and Israeli hackers.

Part 1 of 2: NSA hacking tools are released by the ShadowBrokers, WannaCry begins to spread, Marcus is thanked and then indicted.

In the last part of this two-part blog on Wireshark v3, we covered the following topics: Translations Npcap (No More WinPcap) UDP Conversation Timestamping T...

I guess we're all a bunch of cheaters! <grin> I'll be putting together additional cheat sheets to make sure you are signed up for the Newsletter to get notif...

Typically, when a major release number changes (such as Wireshark v1 to v2), there is a grand and significant set of changes that make many stumble through t...

The Chappell University team will be joining our Partner in Technology Education, Profitap, at Stand 3233 at RSA 2019 in San Francisco! In preparation for RS...

While looking through some trace files the other day (you know, rather than go walk in the sunshine, grab lunch with friends, or any other "normal" activity)...