Kerberos V5 is an authentication system developed at MIT. It is a network authentication protocol designed to provide strong authentication for client/server applications by using secret-key cryptography. (Kerberos 5 is discussed in RFC 1510.) This package provides Kerberos and GSSAPI (Generic Security Services Application Programming Interface) development headers and libraries. It also includes Kerberos ticket and principal tools. N.B. Kerberized r-services, telnet and ftp services are now found in the security/mit-krb5-appl package.