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Network & Web

IPv4 header Parser

Read IPv4 header input and show its structured details. Enter input, adjust the options, then copy or download the result.

Tool workspace

Your input stays in this browser.

Add the required input to continue.

Needs input

You can run the tool again after any change.

Options

Your result appears here

Read IPv4 header input and show its structured details. Enter input, adjust the options, then copy or download the result.

This tool runs open-source code from CyberChef by GCHQ (Apache License 2.0). See open-source credits.

IPv4 header Parser reads an IPv4 header and displays each decoded field.

It returns decoded IPv4 header HTML. The operation runs in your browser. Processing runs in the browser.

Instructions

  1. Provide text or data for this tool.
  2. Provide the header bytes.
  3. Choose input and output formats.
  4. Compare length and checksum fields with the packet.

Example

Input: a valid IPv4 header hex sample

Settings: IPv4 header Parser: Input format: Hex; output format: readable fields.

Result: It returns decoded IPv4 header HTML. The operation runs in your browser.

Limits

  • IPv4 header Parser: The input must contain a valid header.
  • IPv4 header Parser: It does not validate the payload application.
  • IPv4 header Parser: Parsed metadata does not prove packet origin.