p0f
A versatile passive OS fingerprinting tool
P0f is a tool that utilizes an array of sophisticated, purely passive traffic fingerprinting mechanisms to identify the players behind any incidental TCP/IP communications (often as little as a single normal SYN) without interfering in any way.
There is no official package available for openSUSE Leap 15.6Distributioner
openSUSE Tumbleweed
openSUSE Leap 15.6
openSUSE Leap 15.5
SLFO_Main
openSUSE Backports for SLE 15 SP4
openSUSE Backports for SLE 15 SP3
SUSE SLE-15-SP2
SUSE SLE-15-SP1
SUSE SLE-12-SP5
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.