p0f

Versatile passive OS fingerprinting, masquerade detection tool

http://lcamtuf.coredump.cx/p0f3/

/api/formula-linux/p0f.json (JSON API)

Linux formula code on GitHub

Current versions:

stable 3.09b
bottle 🍾 catalina, mojave, high_sierra, sierra, el_capitan
Fork me on GitHub