IPv4 Header Explained | Every Field & Function
In this video, I provide a clear overview of the IPv4 packet structure, walking through the different parts of the standard header. I explain the basic layout and purpose of each field, covering the Version, Internet Header Length (IHL), and the general concept behind the Type of Service (ToS). We also look at the fields used for fragmentation—Identification, Flags, and Offset—and touch on the function of Time to Live (TTL), the Protocol field, and the Header Checksum. This video is designed to give you a solid fundamental understanding of how the bits are organized and where the source and destination addresses fit in. Perfect for students or anyone looking for a quick introduction to networking basics.
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