06-22-2012
When you say update, that brings to my mind tools like rsync, rdist but when you say to monitor the students, if that means seeing their screen (desktop) that would be more something like vnc...
Now, if you had a PC with Reflection X, in their latest version they have something you install on Macs but this is commercial product...
I would go using ssh -X but you will have to get your Mac to accept (IPtables ?) then you could try to install if not present rdist or rsync so you have a centralized updating and start to learn shell scripting ( for the choosen tool...)!
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LEARN ABOUT DEBIAN
mac_ifoff
MAC_IFOFF(4) BSD 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 inter-
faces 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
The mac_ifoff policy module first appeared in FreeBSD 5.0 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
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.
BSD
December 10, 2002 BSD