NAME

     mac_stub — MAC policy stub module

SYNOPSIS

     To compile the stub policy into your kernel, place the following lines in your kernel configuration file:

           options MAC
           options MAC_STUB

     Alternately, to load the stub module at boot time, place the following line in your kernel configuration
     file:

           options MAC

     and in loader.conf(5):

           mac_stub_load="YES"

DESCRIPTION

     The mac_stub policy module implements a stub MAC policy that has no effect on access control in the system.
     Unlike mac_none(4), each MAC entry point is defined as a “no-op”, so the policy module will be entered for
     each event, but no change in system behavior should result.

   Label Format
     No labels are defined for mac_stub.

SEE ALSO

     mac(4), mac_biba(4), mac_bsdextended(4), mac_ifoff(4), mac_lomac(4), mac_mls(4), mac_none(4),
     mac_partition(4), mac_portacl(4), mac_seeotheruids(4), mac_test(4), mac(9)

HISTORY

     The mac_stub policy module first appeared in FreeBSD 5.1 and was developed by the TrustedBSD Project.

AUTHORS

     This software was contributed to the FreeBSD Project by Network Associates Labs, the Security Research
     Division of Network Associates Inc.  under DARPA/SPAWAR contract N66001-01-C-8035 (“CBOSS”), as part of the
     DARPA CHATS research program.

BUGS

     While the MAC Framework design is intended to support the containment of the root user, not all attack
     channels are currently protected by entry point checks.  As such, MAC Framework policies should not be
     relied on, in isolation, to protect against a malicious privileged user.