The Kerberos library is used to dissect Kerberos, sealed DCERPC and secureLDAP protocols.
If this library isn't already installed or available as a package for your platform, you can get it at: http://web.mit.edu/Kerberos/dist/.
XXX - Is it supported on *NIX at all?
You can get the latest version of KfW "Kerberos for Windows" at: http://web.mit.edu/Kerberos/dist/