Netcat is one of the most flexible tools in a pen tester's arsenal, but some penetration testers only scratch the surface of its capabilities. These cheat sheets describe the specific commands needed to use Netcat super effectively in penetration tests, including as an impromptu client, gender-bender relay, file transfer tool, banner grabber, port scanner, and more. If you think you know Netcat, check out this cheat sheet for even more devious uses of this remarkably powerful tool.