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: / snap / core18 / current / etc / systemd / system.conf.d /

Filename : 11-snapd-ctrl-alt-del-burst.conf

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# Snapd allows control of the systemd ctrl-alt-del action
# by controlling the ctrl-alt-del.target unit (masking it)
#
# For example: 
# snap set core system.ctrl-alt-del-action=none
#
# However, systemd implements a parallel emergency action
# mechanism which still, by default, allows the user to
# trigger a forced reset by hitting ctrl-alt-del 7 times
# or more in 2 seconds. Let's make sure this loophole is
# closed by changing the action to none.
#
# The ability to disable this was added in systemd 231, so
# this can only be disabled in Ubuntu Core 18 and later.
#
# Also see: 
# (1) https://www.stigviewer.com/stig/
# red_hat_enterprise_linux_8/2021-03-04/finding/V-230531
# (2) https://github.com/systemd/systemd
# commit 24dd31c19ede505143833346ff850af942694aa6

[Manager]
CtrlAltDelBurstAction=none