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System Administration Guide: Security Services     Oracle Solaris 11 Express 11/10
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Document Information


Part I Security Overview

1.  Security Services (Overview)

Part II System, File, and Device Security

2.  Managing Machine Security (Overview)

3.  Controlling Access to Systems (Tasks)

4.  Virus Scanning Service (Tasks)

5.  Controlling Access to Devices (Tasks)

6.  Using the Basic Audit Reporting Tool (Tasks)

7.  Controlling Access to Files (Tasks)

Part III Roles, Rights Profiles, and Privileges

8.  Using Roles and Privileges (Overview)

9.  Using Role-Based Access Control (Tasks)

10.  Role-Based Access Control (Reference)

11.  Privileges (Tasks)

12.  Privileges (Reference)

Part IV Oracle Solaris Cryptographic Services

13.  Oracle Solaris Cryptographic Framework (Overview)

14.  Oracle Solaris Cryptographic Framework (Tasks)

15.  Oracle Solaris Key Management Framework

Part V Authentication Services and Secure Communication

16.  Using Authentication Services (Tasks)

17.  Using PAM

18.  Using SASL

19.  Using Solaris Secure Shell (Tasks)

20.  Solaris Secure Shell (Reference)

Part VI Kerberos Service

21.  Introduction to the Kerberos Service

22.  Planning for the Kerberos Service

Why Plan for Kerberos Deployments?

Planning Kerberos Realms

Realm Names

Number of Realms

Realm Hierarchy

Mapping Host Names Onto Realms

Client and Service Principal Names

Ports for the KDC and Admin Services

The Number of Slave KDCs

Mapping GSS Credentials to UNIX Credentials

Automatic User Migration to a Kerberos Realm

Which Database Propagation System to Use

Clock Synchronization Within a Realm

Client Configuration Options

Improving Client Login Security

KDC Configuration Options

Kerberos Encryption Types

Online Help URL in the Graphical Kerberos Administration Tool

23.  Configuring the Kerberos Service (Tasks)

24.  Kerberos Error Messages and Troubleshooting

25.  Administering Kerberos Principals and Policies (Tasks)

26.  Using Kerberos Applications (Tasks)

27.  The Kerberos Service (Reference)

Part VII Oracle Solaris Auditing

28.  Oracle Solaris Auditing (Overview)

29.  Planning for Oracle Solaris Auditing

30.  Managing Oracle Solaris Auditing (Tasks)

31.  Oracle Solaris Auditing (Reference)



The Number of Slave KDCs

Slave KDCs generate credentials for clients just as the master KDC does. Slave KDCs provide backup if the master becomes unavailable. Each realm should have at least one slave KDC. Additional slave KDCs might be required, depending on these factors:

It is possible to add too many slave KDCs. Remember that the KDC database must be propagated to each server, so the more KDC servers that are installed, the longer it can take to get the data updated throughout the realm. Also, because each slave retains a copy of the KDC database, more slaves increase the risk of a security breach.

In addition, one or more slave KDCs can easily be configured to be swapped with the master KDC. The advantage of configuring at least one slave KDC in this way is that if the master KDC fails for any reason, you will have a system preconfigured that will be easy to swap as the master KDC. For instructions on how to configure a swappable slave KDC, see Swapping a Master KDC and a Slave KDC.