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mac_ifoff (4)
  • >> mac_ifoff (4) ( FreeBSD man: Специальные файлы /dev/* )

    • BSD mandoc
     

    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.conf5: 

    mac_ifoff_load="YES"
     

    DESCRIPTION

    The 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_bsdextended4, mac_lomac4, mac_mls4, mac_none4, mac_partition4, mac_portacl4, mac_seeotheruids4, mac_test4, mac(9)  

    HISTORY

    The policy module first appeared in Fx 5.0 and was developed by the TrustedBSD Project.  

    AUTHORS

    This software was contributed to the Fx 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

    See mac(9) concerning appropriateness for production use. The TrustedBSD MAC Framework is considered experimental in Fx .

    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.

     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    Label Format
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS

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