▁References ▁ ▁S ources ▁The ▁Earth ▁Institute ▁E IC ES ▁Research ▁E IC ES ▁Home ▁Page ▁E IC ES ▁Research ▁ ▁External ▁links ▁ ▁Category : Col umb ia ▁University ▁Category : Environment al ▁research ▁instit utes ▁Category : S ust ain ability ▁organizations <0x0A> </s> ▁Apple ▁Open ▁Directory ▁is ▁the ▁L D AP ▁directory ▁service ▁model ▁implementation ▁from ▁Apple ▁Inc . ▁A ▁directory ▁service ▁is ▁software ▁which ▁stores ▁and ▁organ izes ▁information ▁about ▁a ▁computer ▁network ' s ▁users ▁and ▁network ▁resources ▁and ▁which ▁allows ▁network ▁administr ators ▁to ▁manage ▁users ' ▁access ▁to ▁the ▁resources . ▁ ▁In ▁the ▁context ▁of ▁mac OS ▁Server , ▁Open ▁Directory ▁describes ▁a ▁shared ▁L D AP v 3 ▁directory ▁domain ▁and ▁a ▁corresponding ▁authentication ▁model ▁composed ▁of ▁Apple ▁Password ▁Server ▁and ▁Ker ber os ▁ 5 ▁tied ▁together ▁using ▁a ▁mod ular ▁Directory ▁Services ▁system . ▁Apple ▁Open ▁Directory ▁is ▁a ▁fork ▁of ▁Open LD AP . ▁ ▁The ▁term ▁Open ▁Directory ▁can ▁also ▁be ▁used ▁to ▁describe ▁the ▁entire ▁directory ▁services ▁framework ▁used ▁by ▁mac OS ▁and ▁mac OS ▁Server . ▁ ▁In ▁this ▁context , ▁it ▁describes ▁the ▁role ▁of ▁a ▁mac OS ▁or ▁mac OS ▁Server ▁system ▁when ▁it ▁is ▁connected ▁to ▁an ▁existing ▁directory ▁domain , ▁in ▁which ▁context ▁it ▁is ▁sometimes ▁referred ▁to ▁as ▁Directory ▁Services . ▁ ▁Apple , ▁Inc . ▁also ▁publish es ▁an ▁API ▁called ▁the ▁Open Directory ▁framework , ▁perm itting ▁mac OS ▁applications ▁to ▁inter rog ate ▁and ▁edit ▁the ▁Open ▁Directory ▁data .