Instructions for using p0f on windows 1) Download Cygwin The cygwin environment emulates a UNIX-like environment on tp of your windows machine. It is available for free from: http://www.cygwin.com/ (Bill adds: For reference, cygwin1.dll is in this directory for those that want it; it can be downloaded from ftp://mirror.mcs.anl.gov/pub/cygwin/release/cygwin in the most recent cygwin....tar.gz package) 2) Download WinPcap p0f also needs the WinPcap drivers installed on the system. These are also free and are available from http://winpcap.polito.it/ Once these are installed, make sure to place p0f.fp in your /etc directory in the cygwin environment or in the current directory and it should work fine. Thanks to Chris Connelly for getting it compile in the cygwin environment. If you have any trouble or have questions, feel free to contact him at chris@connelly.net (Bill: As a side note, there was a (non-cygwin) port done in January 2001. If anyone is interested in updating the port to current p0f, please take a look at http://datanerds.net/~mike/dev/ . Many thanks to Michael Davis of Datanerds for the work.)