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.uk DNSSEC Status update

.uk DNSSEC Status update. 02/05/2011 Brett Carr. Introduction. .uk DNSSEC September 2010 Issues SLD DNSSEC DNSSEC Signing Service. .uk DNSSEC. .uk Signed March 2010 Uses: Opendnssec Centos Oracle HSM’s Three sets of identical hardware/software NSEC3 not needed but deployed.

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.uk DNSSEC Status update

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  1. .uk DNSSEC Status update 02/05/2011 Brett Carr

  2. Introduction • .uk DNSSEC • September 2010 Issues • SLD DNSSEC • DNSSEC Signing Service.

  3. .uk DNSSEC • .uk Signed March 2010 • Uses: Opendnssec Centos Oracle HSM’s Three sets of identical hardware/software • NSEC3 not needed but deployed. • ZSK rolled every 6 months automatically • KSK rolled every 3 years • Low TTL on DNSKEYS to ensure rapid recovery from *issues*

  4. September 2010 Issue • HSM Hardware failure caused OS crash • HSM Locked on reboot • System designed with no urgency to fix so wait • Failover to backup system • Opendnssec key db/config file inconsistency • 2 Day TTL on DNSKEY caused slow recovery What did we change/learn • Don’t lock HSM’s on reboot add’s extra security but more complexity. • Improved checking procedures for failover • Reduce TTL on dnskey to 1 hour so recovery is quicker

  5. SLD DNSSEC • Signing of: • me.uk • co.uk • ltd.uk • plc.uk • org.uk • net.uk • sch.uk • Zones are very large and dynamically updated every minute. • BIND 9.7.3 Continuous signing:Create the keys then add this to your configuration:auto-dnssec maintain;sig-validity-interval 35 28; • Single Key (no KSK and ZSK) as we are the parent • No scheduled rollover • DS’s accepted from capable registrars 18 May

  6. DNSSEC Signing Service • Encourage deployment of DNSSEC further. • Registrar gives us unsigned zone (via notify and axfr) • Nominet signing systems create a signed zone. • Notify sent to customer DNS system for AXFR. • For *.uk zones Nominet signing system inserts DS record into parent.

  7. Questions/Comments

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