Scapy (https://www.scapy.net & https://github.com/secdev/scapy) is a powerful Python-based interactive packet manipulation program and library. It can be used to forge or decode packets for a wide number of protocols, send them on the wire, capture them, match requests and replies, and much more. This workshop will describe its main features step by step, and will let you explore the following topics: - packets manipulation - sending & receiving packets - visualization - IPv6 and TLS support - implementing a new protocol - answering machines - automaton - pipes Requirements: a laptop running Linux (native or virtualized) and a fresh Scapy install from github