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Date:      Wed, 23 Jul 2008 17:56:50 +1000
From:      Mark Andrews <Mark_Andrews@isc.org>
To:        freebsd-stable@freebsd.org
Subject:   Re: FreeBSD 7.1 and BIND exploit 
Message-ID:  <200807230756.m6N7uoNW036882@drugs.dv.isc.org>
In-Reply-To: Your message of "Wed, 23 Jul 2008 09:32:47 %2B0200." <20080723073247.GJ308@rail.eu.org> 

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> Le Wed 23/07/2008, Mark Andrews disait
> > 
> > 	To roll a key signing key.  Add the key at a weekly signing.
> > 	Wait for the DNSKEY RRset TTL to expire.  Send the new
> > 	DS/DLV records for the new keys to the parent/DLV operator.
> > 	Once the updated parent / DLV operator has updated  the
> > 	DS/DLV RRset wait for the old TTL to expire.  Remove the
> > 	old key signing key at your discression.  Normally you
> > 	would do this at the next weekly signing.  This proceedure
> > 	requires one interaction with the parent/dlv operator during
> > 	the rollover.
> > 
> > 	Note this is not much different than what is required when
> > 	changing a nameservers.
> 
> But changing nameserver is an exceptional operation. Nobody wants the burden
>  of an exceptional operation to come back regularly.

	KSK changes should be approximately annual which is short enough
	not to forget but long enough to not be a burden.
 
> -- 
> Erwan
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews@isc.org



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