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



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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