Detects the Java Debug Wire Protocol. This protocol is used by Java programs to be debugged via the network. It should not be open to the public Internet, as it does not provide any security against malicious attackers who can inject their own bytecode into the debugged process.
Documentation for JDWP is available at http://java.sun.com/javase/6/docs/technotes/guides/jpda/jdwp-spec.html
nmap -sV <target>
PORT STATE SERVICE VERSION 9999/tcp open jdwp Java Debug Wire Protocol (Reference Implementation) version 1.6 1.6.0_17
License: Same as Nmap--See https://nmap.org/book/man-legal.html