Directory Proxy Server provides the following features:
Manageability
Single point of access to directory data stored on multiple directory servers
Automatic referral following
Reactive and proactive monitoring of directory servers
Configuration on the command line or with a GUI
All connections have a normal listener port and a secure listener port
Authentication and authorization
Certificate-based authentication with certificate mapping
Secure LDAP reverse proxy
LDAP control filtering
Proxy authorization
Identity mapping
Access control
Distribution
Single point of access to a directory service spread over multiple directory servers
Extensible and customizable distribution algorithm
Server affinity to address propagation delay problem
Connection pooling and partial BER-decoding for performance and scalability
Load-balancing/Fail-over
Routing based on the operation or the connection
Automatic load balancing and automatic fail over and fail back among a set of replicated LDAP directory servers
Three load-balancing algorithms
Virtualization
Multiple virtual views for client applications
Aggregation of multiple heterogeneous data sources
Mapping of attribute names and values
Access to JDBC-compliant data repositories
Access to flat LDIF file resources