Transcript Oracle Database Integration with Active Directory and Windows

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Oracle Database Integration with Active Directory
and Windows Security
Christian Shay
Principal Product Manager, Windows Technologies
Oracle USA
Agenda
• Database Registration and Name
Resolution
• Single Sign-On
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• Windows Native Authentication
• Kerberos
• Security Integration for .NET Applications
• Enterprise User Security and Virtual Directory
Database Registration and Name Resolution
Overview
• Store and resolve Net names through Active
Directory
• Eliminate tnsnames.ora on clients
• Centralize configuration, reduce administration
• Authenticated connection to Active Directory (11g)
• AD no longer needs to allow anonymous access
• Enhanced tools support for storing Net naming
• AD Users and Computers
• Oracle DB Configuration Assistant, Net Configuration
Assistant and Net Manager
Database Registration and Name Resolution
Client OS
Server OS
AD
OID
Windows
Windows
Yes
Yes
Comments
Windows
Any
Yes
Yes
Tools for registering
Net Service in AD
must be run on
Windows
Linux/Unix
Any
No
Yes
AD Integration
solutions can help
Database Registration and Name Resolution
Configuration/Administration
1 – Ensure that Administrator can modify Schema in Active Directory
2 – Register Schema using NetCA
5 - Configure Directory Naming
and Directory Usage (AD) using
NetCA
Windows
Environment
3 - Create Naming Context
using NetCA
4 - Register database in AD
using DBCA or Net Manager
Active
Directory
Repository of
Database
Names and
Connect
Descriptors
Client
Systems
Database Registration and Name Resolution
Run-time
Repository of
Database
Names and
Connect
Descriptors
1 – User signs
on to Desktop
2 – User issues
Connect Request
3Retrieves
Connect
Descriptor
Active
Directory
Oracle Database
4 - Connect to
Database using
Connect
Descriptor
(Any Platform)
Database Registration and Name Resolution
Demo Environment
Machine Name:
xpclient.adnet.dev
User: oracle
Database Server:
orcl
Windows XP
SP2
Machine Name:
w2k3s.adnet.dev
Domain: adnet.dev
Windows Server 2003
EE SP1
(Domain Controller)
Tools installed
Support Tools (under Support directory on CD) -ADSI Edit is part of it
Admin Tools (under i386 directory on CD) -- AD users &
computers, etc
(These are available on Windows 2003 media,)
D E M O N S T R A T I O N
Database
Registration and
Name Resolution
Database Registration and Name Resolution
Summary
1. Ensure that Administrator can modify Schema in Active
Directory
2. Register Schema using NetCA (one time for the entire AD
forest)
3. Create Naming Context using NetCA (once per domain)
4. Register Database in AD using DBCA or Net Manager
5. Configure Directory Naming and Directory Usage (AD) using
NetCA (on systems that want to use AD)
6. Set NAMES.LDAP_AUTHENTICATE_BIND=Yes in
SQLNET.ORA on all 11g client systems
To support pre-11g clients
1. Enable anonymous bind in AD
2. Change ACLs for Oracle Naming Context and Database/Net
Services objects to allow anonymous access
Please refer to the white paper Configuring Microsoft Active Directory for Net Naming for
detailed information
Single Sign-On
Single Sign-On
Authentication
Windows Native
Authentication
Kerberos
Client
OS
Server
OS
Windows
•Included and configured in all db editions
•MS KDC is used implicitly
•Uses External Users mechanism
Windows
•Enterprise User Security not supported
•Direct support of Windows group
membership for role authorization
Any
Any
Comments
•EE and ASO option needed
•MS KDC is supported
•Uses External Users mechanism (by
default)
•Enterprise User Security supported
•EUS and AD integration solutions
needed to support authorization through
Windows group membership
Windows Native Authentication
Basics
•
•
•
•
•
All of this is preconfigured; We use it internally
ORA_DBA: All members get SYSDBA privileges
ORA_OPER: all members get SYSOPER privileges
ORA_ORCL_DBA: … get SYSDBA on ORCL only
For any other Windows user, an external user needs to
be created in Oracle DB
•
•
create user “Sales\frank” identified externally;
Windows groups can be used to assign roles (if os_roles
is true)
•
•
create role sales identified externally;
Corresponding Windows group for a database with SID orcl:
ORA_orcl_sales_d if this should be a default role
•
If Oracle Administration Assistant is used, it makes appropriate changes
in AD and Database
Windows Native Authentication
•
•
•
•
Enabled by default and can work across systems
Windows user logon credentials used for database
authentication
Authentication protocol (Kerberos or NTLM) negotiated
based on OS and Domain Controller
Authorization can be granted through Windows group
membership
•
•
•
•
Pre-defined Windows groups for DBAs and Operators
Uses Oracle External Users and External Roles mechanisms
Oracle Administration Assistant can be used to manage
user authentication and role authorization
This feature is completely independent of Database
Registration and Name Resolution feature
Windows Native Authentication
1 - User
signs on to
desktop
2 - User
attempts
to sign on to
Oracle
Active
Directory/KDC
3 – Negotiate
security protocol
and exchange
security tokens
5 – Find
Windows Group
memberships
(if os_roles is
true)
4 - Identify as a specific
External User
6 – Assign roles based on
database roles or group
memberships (based on
os_roles)
Windows Native Authentication
Configuration
•
Set os_authent_prefix to “” (null) in init.ora
•
•
•
Ensure that sqlnet.authentication_services is set to NTS
in sqlnet.ora (default set up)
DO NOT:
•
•
•
By default it is set to OPS$ (for backward compatibility)
Set remote_os_authent in init.ora (default value false is correct).
Set os_auth_prefix_domain in Registry (default value true is correct)
Set os_roles to true in init.ora if you want to use Windows
Group Membership for role authorization
D E M O N S T R A T I O N
Windows Native
Authentication
Kerberos Authentication
•
•
Integrated with Microsoft Key Distribution Center
(MSKDC)
Supports heterogeneous systems
•
•
•
•
A Windows client can connect to a non-Windows server and vice
versa
Uses External User mechanisms in Database
Can also be supported with Enterprise User Security
EE and ASO (Advanced Security Option) feature
Kerberos Enhancements in 11g
• Stronger encryption algorithms (DES3, AES, RC4)
• Support default encryption type supported by MS KDC
• Encryption type configuration no longer needed in
Registry
• Use DNS Domain Name as Kerberos REALM
name by default
• Mapping between DNS Domain Name and Kerberos
REALM name longer needed in kerberos config file
• Kerberos authentication to Oracle database in a MS
cross-domain setup
• Removal of 30 character limit on the Kerberos user
name
Kerberos Authentication
Configuration
•
•
•
•
•
•
Create Kerberos and sqlnet configuration files on clients
and severs using Oracle Net Manager
Create users in Active Directory for Client and Database
Server (for non-windows clients or servers)
Use ktpass utility to create keytab file and copy to DB
server node
Obtain an initial ticket for the kerberos user
Set os_authent_prefix to “” in init.ora
DO NOT:
•
Set remote_os_authent in init.ora. (default value FALSE is correct)
Kerberos Authentication
MS KDC
User
signs on to
desktop
User
attempts
to sign on to
Oracle
Database
Identify as a specific
External User and assign
database roles accordingly
Example:
SQL> CREATE USER KRBUSER IDENTIFIED EXTERNALLY AS
'[email protected]';
SQL> Grant connect, resource to KRBUSER;
Security
Integration for
.NET Applications
Security Integration for .NET Applications
• OS Authenticated Connection Pool in Oracle Data
Provider for .NET
• Support pooling of OS authenticated users
using Windows identity
• ASP.NET Membership and Role Provider
• Validate and manage user and authorization
information for your ASP.NET web applications
in Oracle Database
Oracle Virtual
Directory:
Centralize DB
User Account
Management
Audience Questions
How many have databases
on an OS besides Windows?
How many can disable DBA
access by disabling a
password in a single
repository ?
How many have user
accounts in AD? Sun? OID?
How many can provide your
CIO with an audit report
verifying DBA and DB user
access?
Centralize Oracle Database Account
Management
• Organizations have many databases on variety of
platforms
• Organization have implemented enterprise directory
services
• Oracle Enterprise User Security is all about how to
centralize database account management
• Oracle Enterprise User Security allows to externalize
database accounts and roles to an LDAP server
• Oracle Virtual Directory allows EUS to work with 3rd
party directories, not just OID
Oracle Virtual Directory Overview
• Oracle Virtual Directory lets organizations rapidly
deploy applications by providing a unified view of
identity without synchronization.
Case Study – MKB Bank (Hungary)
Database Security
Business Challenges
• Built Database Warehouse for reporting
• Wanted to leverage Active Directory & existing provisioning
to manage credentials and role membership
• Did not want to synchronize to another directory
Oracle Solution
• Enterprise User Security & OVD
• OVD connects to AD
• EUS allows employees to use
Windows password and existing
provisioning system to manage access
Return On Investment
• Allowed to rapidly deploy secure
access to Database warehouse
• Did not need to bring up yet another
directory service just to manage
database accounts
• Eliminated help desk calls
Summary
• EUS centralizes database account management into
a directory
• EUS works across heterogeneous operating systems
• OVD enables EUS to work with 3rd party directories
without synchronization
For More Information
Windows Server System Center
http://www.oracle.com/technology/windows
Oracle Net Services (AD White Paper and more)
http://www.oracle.com/technology/products/oraclenet/index.html
.NET Developer Center (ASP.NET Providers)
http://www.oracle.com/technology/dotnet
Oracle Virtual Directory (OVD)
http://www.oracle.com/identity
My email: [email protected]
QUESTIONS
ANSWERS
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search.oracle.com
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