Lab Description

Building a custom network scanner requires more than running an off-the-shelf tool; it demands understanding the protocols and packet mechanics beneath the surface. This module guides you through designing a scanner that identifies live hosts by crafting ARP requests wrapped in Ethernet broadcasts, sending them across the local network, and parsing replies. You’ll begin with discovery using netdiscover, then build ARP packets in Scapy, broadcast them, and format the results for clear reporting. The course also covers adding command-line arguments for flexibility and validating Python 3 compatibility so your scanner is portable and production-ready. By the end, you’ll have a lightweight, extensible scanner tailored to your reconnaissance needs.

What You Will Learn

Program Curriculum

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