Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




System Administration Guide: Security Services
Previous Next

Process Audit Characteristics

The following audit characteristics are set at initial login:

  • Process preselection mask – A combination of the audit classes from the audit_control file and the audit_user database. When a user logs in, the login process combines the preselected classes to establish the process preselection mask for the user's processes. The process preselection mask specifies whether events in each audit class are to generate audit records.

    The following algorithm describes how the system obtains the user's process preselection mask:

    (flags line + always-audit-classes) - never-audit-classes

    Add the audit classes from the flags line in the audit_control file to the classes from the always-audit-classes field in the user's entry in the audit_user database. Then, subtract from the total the classes from the user's never-audit-classes field.

  • Audit ID – A process acquires an audit ID when the user logs in. The audit ID is inherited by all child processes that were started by the user's initial process. The audit ID helps enforce accountability. Even after a user becomes root, the audit ID remains the same. The audit ID that is saved in each audit record always allows you to trace actions back to the original user who had logged in.

  • Audit Session ID – The audit session ID is assigned at login. The session ID is inherited by all child processes.

  • Terminal ID (port ID, machine ID) – The terminal ID consists of the host name and the Internet address, followed by a unique number that identifies the physical device on which the user logged in. Most often, the login is through the console. The number that corresponds to the console device is 0.

Previous Next

  Published under the terms fo the Public Documentation License Version 1.01. Design by Interspire