Views: 1,211Let’s say you are a CO Tech/Engineer or an enterprise network engineer that works with Voice over IP (VoIP). Let’s further say that there are issues with one or more users so you have done a bunch of packet captures, perhaps even used Wireshark’s Ring Buffer capability, and now you want to extract from
Extracting VoIP Packets from Multiple Captures Read More »
Views: 9,872A Practical Introduction to Ethernet, TCP/IP, Addressing, Routing, and Network Troubleshooting 1-Day, Instructor Led, Web Based Delivery or Self Paced, OnlineMinimum: 10 StudentsWeb Based Delivery: Max class size is 30On Site Delivery: Max class size is 20 Click here to go to the Online Class. What Students are Saying about this class: Course Description Almost
CSI-SP-007 – Networking 101 for Technicians Read More »
Views: 22,450Advanced OSPF, IPv4 Quality of Service, Network Security, IPSec, Encryption, and TCP Analysis 2.5-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Understanding the fundamentals of Ethernet, IPv4, TCP/IP, addressing, subnetting, and routing is essential—but network engineers and technicians responsible for operating
CSI-HO-006 – Hands-On Advanced IP Networks/Protocols Read More »
Views: 34,575Ethernet, TCP/IPv4, Addressing, Subnetting, Routing, IP Services, and Quality of Service 3-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Ethernet and IPv4 are two of the fundamental technologies behind modern networking. Whether traffic is crossing a local network, accessing an application,
CSI-HO-001-B – Hands-On TCP/IP and Ethernet Fundamentals – 3 Day Read More »
Views: 36,950Ethernet, TCP/IPv4, Routing, Network Services, Security, QoS, WAN Technologies, and IPv6 Fundamentals 5-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Modern networks are built from layers of interconnected technologies. Ethernet provides local network connectivity, IPv4 provides addressing and packet delivery, TCP
CSI-HO-001-C – Hands-On TCP/IP and Ethernet Fundamentals – 5 Day Read More »
Views: 36,133IPv4 Addressing, Subnetting, Routing, IP Services, and Quality of Service 2-Day Instructor Led Hands On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description IPv4 remains one of the fundamental technologies behind modern networking. Enterprise networks, broadband networks, service-provider infrastructures, data centers, cloud environments, and countless
CSI-HO-001 – Hands-On TCP/IPv4 Fundamentals – 2 Day Read More »
Views: 2,861Learning how to manually control Wi-Fi channels in Linux is a foundational skill for wireless troubleshooting and packet analysis. Proper channel selection is critical because Wi-Fi troubleshooting is highly dependent on capturing the correct RF environment at the correct moment in time. When combined with Wireshark, Linux monitor mode provides one of the most
How to Set a WLAN Frequency or Channel in Linux for Wireshark Packet Capture Read More »
Views: 6,809Epiphany number 3,812!! After years and years of wondering what on earth is going on at Microsoft that they have done no feature changes of significance to PowerPoint, and frustration whenever I change the Notes Master, that I must go to every slide, one by one, and right click on the notes page, click
Apply Master to ALL Notes Pages in MS PowerPoint Read More »
Views: 5,057OK – so this article is for entertainment of all us network nerds. Updated in 2026 As many already know, pretty much every year, the Internet Engineering Task Force (IETF) releases humorous RFC’s – jokes. Usually these happen on or about April 1st to commemorate April Fools Day. Without doubt, some of these are
Humorous and April Fools Day RFC’s Read More »
Views: 2,797I have seen a bunch of posts about IP version 8 supplanting IPv6. Let’s sort this out a bit. I think a full listing of the IP version numbers is needed as a backdrop. The Internet Protocol (IP) has evolved through a sequence of versions during its research, testing, and operational deployment phases. Not
IP Version Clarification and IPv8 Read More »
Views: 990Net neutrality is typically framed as a policy debate (see my background Net Neutrality post here), but its real implications are observable in packet-level behavior. For network engineers and broadband technicians, the question is not abstract: can you see evidence of blocking, throttling, or prioritization in a packet capture? To read more – visit
Net Neutrality at the Packet Level Read More »
Views: 1,545Net neutrality in the United States has evolved through a cycle of regulatory assertion, legal limitation, reclassification, repeal, and attempted reinstatement. It is not a fixed policy but a dynamic framework shaped by the intersection of law, politics, and network engineering realities. At its core, the debate reflects a fundamental tension. On one side
Brief Evolution of Net Neutrality in the US Read More »
Views: 2,416This question was sent to me in an email following my posts on regarding TCP CUBIC. The answer is Yes—Microsoft Windows does support TCP CUBIC, but the nuance is in how and when it’s used. For many years, Windows defaulted to Compound TCP (CTCP) rather than CUBIC. Meanwhile, Linux distributions standardized on TCP CUBIC,
Does Windows support TCP CUBIC? Read More »
Views: 1,668I described what Adaptive Bit Rate Streaming (ABR) is in my prior article, if you need that background. Also there is an ABR Lab Exercise if you want some hands on learning with ABR that will show you visually some of the items discussed below. Here, I wanted to dive a little deeper into
Mapping ABR to TCP Congestion Control and QUIC Read More »
Views: 1,962Adaptive Bitrate Streaming (ABR) is a video delivery method that dynamically adjusts the quality of a stream in real time based on three things: network conditions, device capability, and player performance. Instead of delivering a single fixed-quality, and therefore fixed transfer rate video, ABR continuously selects the most appropriate bitrate to maintain smooth playback
What Is Adaptive Bitrate Streaming (ABR)? Read More »
