Date: Thu, 19 Aug 1999 11:19:18 -0700 (PDT)
From: Archie Cobbs <archie@whistle.com>
To: Goran.Lowkrantz@infologigruppen.se (Lowkrantz Goran)
Cc: freebsd-security@FreeBSD.ORG ('freebsd-security@FreeBSD.ORG')
Subject: Re: Securelevel 3 ant setting time
Message-ID: <199908191819.LAA94866@bubba.whistle.com>
In-Reply-To: <B500F74C6527D311B61F0000C0DF5ADC07ECB5@valhall.ign.se> from "Lowkrantz, Goran" at "Aug 18, 1999 09:54:53 pm"
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Lowkrantz, Goran writes: > Just found that I can't correct the time on my firewall, running at security > level 3. When I try I get the following: > > date: settimeofday (timeval): Operation not permitted > > Is this by design? If so, why? Yes, this is to prevent attacks that use wrong time settings. You are allowed to change the time a little bit, just not a lot. The solution would be to do somthing like this.. - At boot time, before setting the securelevel, run ntpdate - Run xntpd normally -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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