| |
 |
 |
|
|
|
|
|
|
mac_ifoff
MAC_IFOFF(4) FreeBSD Kernel Interfaces Manual MAC_IFOFF(4)
NAME
mac_ifoff -- interface silencing policy
SYNOPSIS
To compile the interface silencing policy into your kernel, place the
following lines in your kernel configuration file:
options MAC
options MAC_IFOFF
Alternately, to load the interface silencing policy module at boot time,
place the following line in your kernel configuration file:
options MAC
and in loader.conf(5):
mac_ifoff_load="YES"
DESCRIPTION
The mac_ifoff interface silencing module allows administrators to enable
and disable incoming and outgoing data flow on system network interfaces
via the sysctl(8) interface.
To disable network traffic over the loopback (lo(4)) interface, set the
sysctl(8) OID security.mac.ifoff.lo_enabled to 0 (default 1).
To enable network traffic over other interfaces, set the sysctl(8) OID
security.mac.ifoff.other_enabled to 1 (default 0).
To allow BPF traffic to be received, even while other traffic is dis-
abled, set the sysctl(8) OID security.mac.ifoff.bpfrecv_enabled to 1
(default 0).
Label Format
No labels are defined.
SEE ALSO
mac(4), mac_bsdextended(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_ifoff policy module first appeared in FreeBSD 5.0 and was devel-
oped by the TrustedBSD Project.
AUTHORS
This software was contributed to the FreeBSD Project by Network Asso-
ciates 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
See mac(9) concerning appropriateness for production use. The TrustedBSD
MAC Framework is considered experimental in FreeBSD.
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.
FreeBSD 6.2 December 10, 2002 FreeBSD 6.2
|
|
Copyright ©2006 TheBestISP.com |
|
|
|
 |
|
Home