Xprobe2

If you are looking for an alternative to TCP protocol-dependent tools for remote active operating system fingerprinting, Xprobe is worth checking out. This tool combines various remote active operating system fingerprinting methods that use the ICMP protocol, discovered during the "ICMP Usage in Scanning" research project. With its simple, fast, efficient, and powerful way to detect the operating system of a targeted host, Xprobe is an option definitely worth considering.

Xprobe2 is an active operating system fingerprinting tool that uses fuzzy signature matching, probabilistic guesses, multiple matches simultaneously, and a signature database as opposed to other methods. This tool has a different approach to operating system fingerprinting but is equally effective.

To use Xprobe, you will need a C++ compiler, and libusi++ (included with the distribution), along with lipcap (use version 0.6.x or later). If libpcap is not installed in the standard path, utilize the options --with-libpcap-libraries=/path/ and --with-libcap-includes=/path.

Overall, Xprobe offers a great alternative for remote active operating system fingerprinting, especially for those looking to avoid TCP protocol-dependent tools. With its advanced features and user-friendly interface, Xprobe is a valuable addition to your software toolkit.