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Security
You can secure your Informix® database server and the data that is stored in your Informix databases. You can encrypt data, secure connections, control user privileges and access, and audit data security.
Security in HCL Informix®
The Informix® Security Guide documents methods for keeping your data secure by preventing unauthorized viewing and altering of data or database objects, including how to use the secure-auditing facility of the database server.
Auditing data security
Audit administration
Audit mask maintenance
Creating audit masks

Security
You can secure your Informix® database server and the data that is stored in your Informix databases. You can encrypt data, secure connections, control user privileges and access, and audit data security.
- Security in HCL Informix®
  The Informix® Security Guide documents methods for keeping your data secure by preventing unauthorized viewing and altering of data or database objects, including how to use the secure-auditing facility of the database server.
  - Securing data
  - Auditing data security
    - Overview of auditing with the Informix® secure auditing facility
    - Audit administration
    - Audit analysis
    - The onaudit utility
      Use the onaudit utility to manage audit masks and auditing configuration.
    - The onshowaudit utility
      Use the onshowaudit utility to view the audit information from an existing audit trail. You can use this command to extract information for a particular user, database server, or both, making it possible to isolate a particular subset of data from a potentially large audit trail.
    - Audit event codes and fields
      The secure-auditing facility audits certain database server events.
    - The ADTCFG file

Creating audit masks

About this task

You can create masks that more closely match the types of activities that individual users perform than do default and global masks.

Procedure

To create individual user masks, specify user IDs as mask names.
To create template masks, preface the name of a mask with an underscore (_). Overview of auditing with the Informix secure auditing facility describes template masks and user masks.

Example

You specify events in the mask when you create it by using the audit events from the alphabetic listing in the table Audit event codes and fields. You specify events for customized (template and user) audit masks the same way that you do for the _default, _require, and _exclude audit masks.

For example, you might want to create three template masks with different levels of security: _low, _medium, and _high. Alternatively, you might require just two templates for familiar and unfamiliar users that you copy to individual user masks: _guest and _trusted.