In this video we will take a look at how the TCP Window Scaling option works. In short, this option allows a TCP receiver to advertise a receive window of up to 1GB. But how does this feature actually work? How does Wireshark come up with the Calculated Window Size value? This video will explain! […]

You drew the short straw. Over the next couple of weeks, while everyone else is skiing in some amazing place or finally taking that year-end time with their kids, you are left behind at the office to “monitor” the system. Unless you work for UPS or Amazon, it will most likely be a relaxed couple […]

What does that CONTACT CHRIS Window field in the TCP header do? Many people ask this question after capturing a trace file with Wireshark. What is the TCP Window? How does it work? How can I use it to troubleshoot performance problems? We will answer these questions and more in this nine minute video. Check […]

Let's learn more about TCP. So far, we've looked at the handshake process and how sequence numbers work. Now, let's check out how the acknowledgment process works with TCP. After all, this is a critical component of making TCP a connection-oriented, reliable transport protocol. Understanding how these numbers work goes a long way in troubleshooting issues in networks […]

TCP is important stuff for network engineers to know. Why? Today's problems aren't so cut-and-dry as they used to be. When a problem strikes, we can't just say "it's not the network" and go along with our day. A core understanding of TCP and how it carries and acknowledges data goes a long way in […]

This video is the first in a series that explains how TCP works using Wireshark. The first step in a TCP Connection is establishing a Handshake. This video shows how TCP does its thing.