The following documents provide additional information on Kerberos security.
Java tutorial on JAAS and the Java GSS API:
http://java.sun.com/j2se/1.4.2/docs/guide/security/jgss/tutorials/index.html
MIT Kerberos documentation and download site:
http://web.mit.edu/kerberos/www/index.html
CyberSafe Limited:
http://www.cybersafe.ltd.uk
CyberSafe Limited document on Windows-Kerberos interoperability:
www.cybersafe.ltd.uk/docs_cybersafe/Kerberos%20Interoperability%20-%20Microsoft%20W2k%20&%20ActiveTRUST.pdf
Wedgetail Communications Kerberos FAQ:
http://www.wedgetail.com/jcsi/kerberos/FAQ.html
Description of how Windows implements authentication, including information about Active Directory Kerberos:
http://www.windowsitlibrary.com/Content/617/06/1.html
Description of Windows Kerberos:
http://www.microsoft.com/windows2000/techinfo/howitworks/security/kerberos.asp
Kerberos RFC 1510:
http://www.linuxdig.com/rfc/individual/1510.php