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I know how Kerberos works and understand it purpose but I need some real world examples, where does it fit, and have you ever use it?
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Kerberos is used to authenticate entities requesting access to network resources, especially in large networks to support SSO. The protocol is used by default in many widely used networking systems. Some systems in which Kerberos support is incorporated or available include the following: Amazon Web Services.
Is Kerberos Obsolete? Kerberos is far from obsolete and has proven itself an adequate security-access control protocol, despite attackers' ability to crack it. The primary advantage of Kerberos is the ability to use strong encryption algorithms to protect passwords and authentication tickets.
Perhaps the most widely know products which use Kerberos, are Microsoft Windows and Microsoft Active Directory. In a Microsoft network/domain, users authenticate using the Kerberos protocol when they logon to their Windows workstation.
Initially developed by the Massachusetts Institute of Technology (MIT) for Project Athena in the late '80s, Kerberos is now the default authorization technology used by Microsoft Windows. Kerberos implementations also exist for other operating systems such as Apple OS, FreeBSD, UNIX, and Linux.
Windows 2000 and later use Kerberos as their default authentication method. Some Microsoft additions to the Kerberos suite of protocols are documented in RFC 3244 "Microsoft Windows 2000 Kerberos Change Password and Set Password Protocols". RFC 4757 documents Microsoft's use of the RC4 cipher. While Microsoft uses the Kerberos protocol, it does not use the MIT software.
Many UNIX-like operating systems, including FreeBSD, Apple's Mac OS X, Red Hat Enterprise Linux 4, Sun's Solaris, IBM's AIX, HP's OpenVMS, and others, include software for Kerberos authentication of users or services.
from wikipedia,
also if you visit http://www.kerberos.org/ , the Kerberos Consortium, they have a pdf document which has as sponsors:
Which shows that if implemented correctly, there are uses for it.
visit http://k5wiki.kerberos.org/wiki/Main_Page for more information on this consortium.
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The computer science department at my university uses it for authenticating users who are logging in to CS dept computers remotely (usually from outside the building or department network) over SSH.
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