The Laser & Light Lab (LLL) at the Institute of Computer Science 4/University of Bonn has been set up to support teaching activities of undergraduate lectures of practical computer science. Programming work on Linux & Windows based systems focuses on communication in a distributed system, control of externally connected hardware (via parallel port, USB, TCP/UDP/IP) and external hardware (DMX light controller, ILDA-compatible full-color laser projector). Since 2013, the LLL is involved in the standardization activities of IDN (ILDA Digital Network), e.g. contributing with proof-of-concept implementations to several IDN use cases, like software driver for IDN producers (e.g. HE Laserscan, Medialas Mamba/M III, mylaserpage Mamba X4 and others), IDN-Toolbox to visualize received IDN streams, IDN plug-in for Wireshark, and others.