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AUDIT(4) BSD Kernel Interfaces Manual AUDIT(4)
NAME
audit -- Security Event Audit
SYNOPSIS
options AUDIT
DESCRIPTION
Security Event Audit is a facility to provide fine-grained, configurable logging of security-relevant events, and is intended to meet the
requirements of the Common Criteria (CC) Common Access Protection Profile (CAPP) evaluation. The FreeBSD audit facility implements the de
facto industry standard BSM API, file formats, and command line interface, first found in the Solaris operating system. Information on the
user space implementation can be found in libbsm(3).
Audit support is enabled at boot, if present in the kernel, using an rc.conf(5) flag. The audit daemon, auditd(8), is responsible for con-
figuring the kernel to perform audit, pushing configuration data from the various audit configuration files into the kernel.
Audit Special Device
The kernel audit facility provides a special device, /dev/audit, which is used by auditd(8) to monitor for audit events, such as requests to
cycle the log, low disk space conditions, and requests to terminate auditing. This device is not intended for use by applications.
Audit Pipe Special Devices
Audit pipe special devices, discussed in auditpipe(4), provide a configurable live tracking mechanism to allow applications to tee the audit
trail, as well as to configure custom preselection parameters to track users and events in a fine-grained manner.
SEE ALSO
auditreduce(1), praudit(1), audit(2), auditctl(2), auditon(2), getaudit(2), getauid(2), poll(2), select(2), setaudit(2), setauid(2),
libbsm(3), auditpipe(4), audit.log(5), audit_class(5), audit_control(5), audit_event(5), audit_user(5), audit_warn(5), rc.conf(5), audit(8),
auditd(8), auditdistd(8)
HISTORY
The OpenBSM implementation was created by McAfee Research, the security division of McAfee Inc., under contract to Apple Computer Inc. in
2004. It was subsequently adopted by the TrustedBSD Project as the foundation for the OpenBSM distribution.
Support for kernel audit first appeared in FreeBSD 6.2.
AUTHORS
This software was created by McAfee Research, the security research division of McAfee, Inc., under contract to Apple Computer Inc. Addi-
tional authors include Wayne Salamon, Robert Watson, and SPARTA Inc.
The Basic Security Module (BSM) interface to audit records and audit event stream format were defined by Sun Microsystems.
This manual page was written by Robert Watson <rwatson@FreeBSD.org>.
BUGS
The FreeBSD kernel does not fully validate that audit records submitted by user applications are syntactically valid BSM; as submission of
records is limited to privileged processes, this is not a critical bug.
Instrumentation of auditable events in the kernel is not complete, as some system calls do not generate audit records, or generate audit
records with incomplete argument information.
Mandatory Access Control (MAC) labels, as provided by the mac(4) facility, are not audited as part of records involving MAC decisions.
BSD
May 31, 2009 BSD
05-06-2010
