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MAC_IFOFF (4) | Special files and drivers | Unix Manual Pages | :man

NAME

mac_ifoff - "interface silencing policy"

CONTENTS

Synopsis
Description
Label Format
See Also
History
Authors
Bugs

SYNOPSIS

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


.Cd "options MAC"


.Cd "options MAC_IFOFF"

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


.Cd "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 disabled, 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

AUTHORS

BUGS

mac(9)


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