This chapter discusses important security concepts as they relate to Siebel eBusiness Applications running on IBM's DB2 UDB for z/OS and OS/390. This chapter also describes the roles and permissions required to set up a connection between the Siebel Server and the database server residing on the DB2 host and to install the Siebel application on it.

For a discussion of Siebel architecture in general, including a discussion of supported client types, refer to the Deployment Planning Guide and the Siebel Installation Guide for the operating system you are using.

This chapter consists of the following topics:

• About Siebel Application Data Security
• Operating System Security
• Password Change and Expiration
• Changing Passwords from Remote Clients
• z/OS and OS/390 Security
• Data Transmission Security for Siebel Clients
• Required Authorizations