3. Kerberos 1/6
The Kerberos authentication system was deve-loped at MIT as part of the Athena project
Since version 4, the MIT reference implemen-tation is publicly and freely available
In addition, there are many commercial Kerberos implementations
Kerberos version 5 is specified in RFC 1510 and submitted to the Internet standards track
The IETF Security Area hosts a Kerberos WG (KRB-WG)