dnssec-enable made named stop working

[Mark Andrews]

In message <55A57B9C.6050209 at gmail.com>, Leandro writes:
> Suddenly   server stop working ; on logs following messages appeared :
> 
> alidating @0x7f2c60591400: . NS: got insecure response; parent indicates 
> it should be secure
> error (insecurity proof failed) resolving './NS/IN': 199.7.83.42#53
> validating @0x7f2c60528430: net SOA: verify failed due to bad signature 
> (keyid=48497): RRSIG validity period has not begun
> validating @0x7f2c60528430: net SOA: no valid signature found
> After add
> dnssec-enable = no ;
> and restart the server, it began working again.

It looks like the clock is wrong based on "RRSIG validity period has
not begun".  Run "date -u" and check everything.

> a)Why did it happen if server was already working ?
> In my original named.conf I had default settings like this:
> the include statement:
> include "/etc/named.root.key";
> and the file named.root.key containing:
> 
> managed-keys {
>      # DNSKEY for the root zone.
>      # Updates are published on root-dnssec-announce at icann.org
>      . initial-key 257 3 8 
> "AwEAAagAIKlVZrpC6Ia7gEzahOR+9W29euxhJhVVLOyQbSEW0O8gcCjF 
> FVQUTf6v58fLjwBd0YI0EzrAcQqBGCzh/RStIoO8g0NfnfL2MTJRkxoX 
> bfDaUeVPQuYEhg37NZWAJQ9VnMVDxP/VHL496M/QZxkjf5/Efucp2gaD 
> X6RS6CXpoY68LsvPVjR0ZSwzz1apAzvN9dlzEheX7ICJBBtuA6G3LQpz 
> W5hOA2hzCTMjJPJ8LbqF6dsV6DoBQzgul0sGIcGOYl7OyQdXfZ57relS 
> Qageu+ipAdTTJ25AsRTAoub8ONGcLmqrAmRLKBP1dfwhYB4N7knNnulq QxA+Uk1ihz0=";
> };
> 
> b) Is it bad practice  to disable dnssec option ?
> c) Which is a good practice about dnssec use ?
> e) Named using dnssec have problems very often ?
> c) Using dnssec will decrease server performance ?
> 
> 
> Sorry for the questions battery butIm very concerned about it, my server 
> was ready to go on production but now I have to figure out this issue.
> I am reading some docs and researching about this.
> Any comments or thought  would be wellcome
> Leandro.
> 
> 
> 
> 
> 
> 
> 
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org