wireshark

Wireshark v4 Profile Templates

When Wireshark v4 was released, I received a number of emails complaining about the new layout (Packet Details side-by-side with Packet...

Packet Pub Quiz Time!

READY FOR SOME GEEKY FUN? Throughout my career in packet analysis, I've made some great friends with similar interests. Tony Fortunato...

Virtual Event Hosting and Video Streaming Troubleshooting

Updated: September 27th, 2020 In March, thousands of IT professionals and students joined us for CORE-IT, a free...

The "Legit" DDoS on PG&E

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 [100119]

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

HTTP to HTTPS Redirection

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

Troubleshooting SYNs of the Network

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

Customize the Wireshark Expert

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

GeoIP Mapping in Wireshark

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

Analyze a Malicious HTTP Redirection

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

Spurious Retransmissions - a Concern?

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

Network Forensics Cheat Sheet

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...

Free TCP Analysis Poster

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