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x-500
is-successor-of
- Light Weight Directory Access Protocol, LDAP [ successor ]
service-is-using-protocol
- Directory System Protocol, DSP [ protocol ]
- Directory Access Protocol (DAP) [ protocol ]
Directory Service
- X.500 Directory Services
Types:
history
directory service within the OSI model -- idea of global, distributed database
history
was supposed to complement X.400 (email) for global white and yellow pages
Comment:
look up information about users (white-pages: addresses, email, fax, ....) -- and services (yellow-pages: plumbing, printing, ...)
experience
far too complicated, heavy-weight
Comment:
organisations would run their own X.500 service -- can be part of a global directory structure -- is structured in a "tree" hierarchy