Wireshark

Content that refers to the Wireshark packet analysis tool.

How to Set a WLAN Frequency or Channel in Linux for Wireshark Packet Capture

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Post Views: 121 Learning 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 […]

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Net Neutrality at the Packet Level

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Post Views: 284 Net 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? Using Wireshark, it

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What Is Adaptive Bitrate Streaming (ABR)?

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Post Views: 397 Adaptive 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

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What is TCP CUBIC and Why so popular?

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Post Views: 627 Most people do not know this, but TCP CUBIC is the dominant congestion control algorithm used in modern TCP/IP networks. It is designed to efficiently utilize high-speed, long-distance links while maintaining fairness across flows with different round-trip times (RTTs). Today, it is the default congestion control algorithm in most Linux systems, and

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Combining Wireshark Ring Buffers with Capture Filters for Performance

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Post Views: 743 Check out these great references as well:  Our custom profiles repository for Wireshark  Our Udemy course on Wireshark   Our Udemy course on Wireless Packet capture In our previous post I showed you how to use Wireshark’s Ring Buffer feature. I think we can all agree how great that feature is. In this

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Wireshark Ring Buffer Capture Feature

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Post Views: 1,415 Check out these great references:  Our custom profiles repository for Wireshark  Our Udemy course on Wireshark   Our Udemy course on Wireless Packet capture Wireshark’s Ring Buffer feature is a capture mechanism feature that automatically rotates packet capture files based on size or time limits, overwriting the oldest files when a defined limit

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The TLS 1.2 Protocol Ladder

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Post Views: 1,503 I provide this information for reference when examining TLS in Wireshark. The TLS 1.2 protocol ladder (also called the TLS handshake ladder) describes the step-by-step sequence of message exchanges between a client and server as they negotiate a secure, encrypted connection. Think of it as a “ladder” where each side alternates rungs

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What is the Adapter for loopback traffic capture in Wireshark?

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Post Views: 4,847 Using a loopback adapter (also called a local loopback interface) for packet capture in Wireshark allows you to capture traffic that stays within your own computer — for example, packets exchanged between local applications via localhost or 127.0.0.1. Normally, this traffic never reaches a physical network interface, so a loopback capture is

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Ethernet Taps to Capture Network Traffic

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Post Views: 2,457 Many technicians and network engineering staff, as well as IT staff, often need to “tap” into the Ethernet to capture and troubleshoot network traffic. A full-duplex tap (also called a network tap) is a hardware device placed inline on an Ethernet link that allows network engineers to capture all traffic traveling in

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