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Oracle Directory Server Enterprise Edition Reference 11 g Release 1 (
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Document Information


1.  Directory Server Enterprise Edition File Reference

Software Layout for Directory Server Enterprise Edition

Directory Server Instance Default Layout

Directory Proxy Server Instance Default Layout

Part I Directory Server Reference

2.  Directory Server Overview

3.  Directory Server LDAP URLs

4.  Directory Server LDIF and Search Filters

5.  Directory Server Security

6.  Directory Server Monitoring

7.  Directory Server Replication

8.  Directory Server Data Caching

9.  Directory Server Indexing

10.  Directory Server Logging

11.  Directory Server Groups and Roles

12.  Directory Server Class of Service

13.  Directory Server DSMLv2

14.  Directory Server Internationalization Support

Part II Directory Proxy Server Reference

15.  Directory Proxy Server Overview

16.  Directory Proxy Server Load Balancing and Client Affinity

17.  Directory Proxy Server Distribution

18.  Directory Proxy Server Virtualization

19.  Connections Between Directory Proxy Server and Backend LDAP Servers

20.  Connections Between Clients and Directory Proxy Server

Criteria for Allocating a Connection to a Connection Handler

Data Views for Connection Handlers

Resource Limits Policies for Connection Handlers

Customized Search Limits

Request Filtering Policies for Connection Handlers

Subtrees in the Request Filtering Policy

Allowed Subtrees

Prohibited Subtrees

Search Data Hiding Rules in the Request Filtering Policy

21.  Directory Proxy Server Client Authentication

22.  Security in Directory Proxy Server

23.  Directory Proxy Server Logging

24.  Directory Proxy Server Alerts and Monitoring


Criteria for Allocating a Connection to a Connection Handler

An instance of Directory Proxy Server can have many connection handlers. When a client connects to Directory Proxy Server, the proxy evaluates whether the attributes of the connection match the criteria of one of the connection handlers. When a match is found, the connection is classified into that connection handler. All of the policies defined for that connection handler apply to the connection. Operations performed through that connection are exposed to all of the data views or to a list of data views defined by the connection handler.

After being classified into a connection handler, a connection can be automatically reclassified into another connection handler by Directory Proxy Server. For example, if a client connects anonymously, the connection is allocated to the connection handler configured for anonymous connections. If the client later provides a bind DN on the same connection, the connection can be reallocated to another connection handler. Similarly, a non-secure LDAP connection is initially classified into a connection handler for non-secure connections. If the client uses startTLS to promote the connection to secure mode, the connection is automatically reclassified into a connection handler for secure connections.

A connection is evaluated against connection handlers in order of the priority of the connection handler. Priority one is the highest priority connection handler. The connection is classified into the first connection handler for which there is a match. Connection handlers with the most specific criteria should have a higher priority than those with less specific or more general criteria. For example, a connection handler that specifies a bind DN should have a higher priority than a connection handler that specifies a simple bind.

If a connection does not match the criteria of any configured connection handler, the connection is allocated to the default connection handler. The criteria of the default connection handler cannot be modified. In addition, the default connection handler cannot be disabled or deleted. However, the policies and data views of the default connection handler can be changed.

The default connection handler is the lowest priority connection handler. If a new connection handler is created without a priority, the new connection handler is given a higher priority than the default connection handler. If two connection handlers have the same priority, the order in which the connection is evaluated against them is not specified.

The criteria expression of a connection handler is a logical AND between criteria of different types and a logical OR between criteria of the same type. For example, if a criteria is specified for client IP address and a criteria is set for client domain name, both of the criteria must be met. However, if two criteria are set for client IP address, either, not both, of the criteria must be met.

The following list summarizes the criteria used to classify connections into connection handlers. For information about how to configure the criteria, see Creating, Configuring, and Deleting Connection Handlers in Oracle Directory Server Enterprise Edition Administration Guide.