Installation guide

protocol A set of rules that describes how devices on a network
exchange information.
protocol data unit See PDU.
proxy authentication A special form of authentication where the user requesting
access to the directory does not bind with its own DN but with a
proxy DN.
proxy DN Used with proxied authorization. The proxy DN is the DN of an
entry that has access permissions to the target on which the
client-application is attempting to perform an operation.
PTA Mechanism by which one Directory Server consults another to
check bind credentials. Also pass-through authentication.
PTA directory server In pass-through authentication (PTA), the PTA Directory Server
is the server that sends (passes through) bind requests it
receives to the authenticating directory server.
PTA LDAP URL In pass-through authentication, the URL that defines the
authenticating directory server, pass-through subtree(s), and
optional parameters.
R
RAM Random access memory. The physical semiconductor-based
memory in a computer. Information stored in RAM is lost when
the computer is shut down.
rc.local A file on Unix machines that describes programs that are run
when the machine starts. It is also called /etc/rc.local
because of its location.
RDN The name of the actual entry itself, before the entry's ancestors
have been appended to the string to form the full distinguished
name. Also relative distinguished name.
referential integrity Mechanism that ensures that relationships between related
entries are maintained within the directory.
referral (1) When a server receives a search or update request from an
LDAP client that it cannot process, it usually sends back to the
client a pointer to the LDAP sever that can process the request.
(2) In the context of replication, when a read-only replica
receives an update request, it forwards it to the server that
holds the corresponding read-write replica. This forwarding
Glossary
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