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Date:      Thu, 1 Apr 1999 16:33:25 -0800 (PST)
From:      Nick Sayer <nsayer@quack.kfu.com>
To:        freebsd-hackers@freebsd.org
Subject:   Suggestion: loosen slightly securelevel>1 time change restriction
Message-ID:  <199904020033.QAA09981@medusa.kfu.com>

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At the moment, setting the time to any point in the past (that is,
if the delta being applied is negative) is not allowed if the securelevel
of the system is >1.

The problem with this is that even if you run ntpdate at boot time,
xntpd can occasionally want to make small negative steps.

I suggest easing up slightly on the restriction. Say, negative steps of
more than a minute are disallowed. It would seem to me that this would
let xntpd operate correctly in most cases while still denying the
opportunity for serious mischief to hackers desiring to wreak havoc
with time warps.

Comments?


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