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Technical Analysis of the Naming Scheme Used For Individual Root Servers (R5)

Date IssuedDocumentReference IDCurrent Phase

Technical Analysis of the Naming Scheme Used For Individual Root Servers (R5)RSSAC028

CLOSED


Description:

The fundamental recommendation of the RSSAC is to not change the current root server system naming scheme until the studies listed in section 7.2 can be completed. However, during the preparation of this document, the RSSAC Caucus Root Server Naming Work Party also made some observations that could be considered as recommendations based on particular outcomes in the further studies, and based on the risk analysis in Section 6.

If node re-delegation attacks pose a serious risk that needs to be mitigated, the following seem reasonable to consider:

  • The root server addresses should be signed with DNSSEC to enable a resolver to authenticate resource records within the priming response. The root server addresses should be signed in a way that reduces the potential for operational breakage.
  • Because the root server IP address information and the root zone are closely correlated, both sets of information should continue to be hosted on the same servers. This can be done using delegation or including the root server names in the root zone. All information necessary to validate the root-servers’ A/AAAA RRsets and the root zone should be hosted on the root servers.
  • Among the various options considered in this document, moving the root server names to the root zone (5.3), or adding a new TLD under the root zone (5.4) are both viable options that would result in signing the root server addresses. Additional studies are needed to determine which of these options, if any, would be more favorable than the other in practice.


STATUS UPDATES

DatePhaseTypeStatus Updates

 

ClosedPhase ChangeThis Advice Item is now Closed

 

Phase 2AP FeedbackICANN received confirmation of the updated understanding.

 

Phase 2Board UnderstandingUpon further review of our original Understanding, the org would like to revise it. Because this recommendation is listed as speculative, the org believes there is no action for the ICANN Board to take and this item should be closed.

 

Phase 2Phase UpdateUpdated Understanding sent to RSSAC for review.

 

Phase 2Phase UpdateAdvice Item returned to Phase 2: Understand to request further clarification of recommendation.

 

Phase 2Phase ChangeNow in Phase 2: Understand

 

Phase 3Phase ChangeNow in Phase 3: Evaluate and Consider

 

Phase 2AP FeedbackReceived confirmation of understanding. RSSAC states: The RSSAC / RSSAC Caucus will scope the study. After that collaboration may be needed between the RSSAC / RSSAC Caucus and ICANN org to perform the studies.

 

Phase 2Phase UpdateUnderstanding sent to RSSAC for review.

 

Phase 2Board Understanding

The ICANN org understands that the RSSAC has also provided an additional, speculative recommendation, which states that if node re-delegation attacks pose a serious risk that needs to be mitigated, the following should also be considered:

  • The root server addresses should be signed with DNSSEC to enable a resolver to authenticate resource records within the priming response.
  • Because the root server IP address information and the root zone are closely correlated, both sets of information should continue to be hosted on the same servers.
  • Among the various options considered in this document, moving the root server names to the root zone (5.3), or adding a new TLD under the root zone (5.4) are both viable options that would result in signing the root server addresses.

Additional studies are needed to determine which of these options, if any, would be more favorable than the other in practice. The ICANN org requests clarification from the RSSAC as to whether the RSSAC is recommending the RSSAC/root server community or the ICANN org to perform the studies.

 

Phase 2Phase ChangeNow in Phase 2: Understand

 

Phase 1Phase UpdateICANN acknowledged receipt of Advice.

 

Phase 1Phase UpdateRSSAC published RSSAC028: Technical Analysis of the Naming Scheme Used For Individual Root Servers Link: https://www.icann.org/en/system/files/files/rssac-028-03aug17-en.pdf.
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