80 Glossary
permission
In the context of access control, permission states whether access to the directory information is
granted or denied and the level of access that is granted or denied. See access rights.
PDU
Also Protocol Data Unit. Encoded messages which form the basis of data exchanges between
SNMP devices.
pointer CoS
A pointer CoS identifies the template entry using the template DN only.
presence index
Allows searches for entries that contain a specific indexed attribute.
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
Also Pass-through authentication. Mechanism by which one Directory Server consults another
to check bind credentials.
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.
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