[dns-operations] Delegation checking (was: Re: Some DNSSEC trivia)

Joe Abley jabley at ca.afilias.info
Thu Jan 10 15:51:26 UTC 2008

On 10-Jan-2008, at 10:17, Paul Vixie wrote:

> i must have misstated.  i said "walk the tree from the root to  
> itself" so
> i mean that as the owner of vix.com i'd check that the root's  
> delegation to
> com matched(*) com's apex, and that com's delegation to vix.com  
> matched(*)
> vix.com's apex, and that every server answered authoritatively and  
> that the
> serial numbers were close(*).  i do not mean look for all delegations
> involving my server, just all the delegations that lead to my zones.

That's clear, thanks. The general idea seems like something I'd turn  
on, on servers that I run.

I'd probably prefer it to be a script that runs out of cron and sends  
mail, instead of a BIND9 option that creates a log message I would  
probably never see.

Perhaps by "close" you could mean "are only different for periods less  
than a specified threshold". A reasonable default threshold could be N  
* REFRESH, for some small N. An e-mail address for notifications might  
be constructed from the RNAME; a list of zones to check might be  
pulled from named.conf.


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