Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers

The encrypted DNS protocol was originally designed to protect DNS communication privacy between users and recursive resolvers (user-recursive side). Currently, encrypted DNS communication has been widely deployed. However, DNS communications between recursive resolvers and authoritative servers (rec...

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Main Authors: DUAN Liying, LI Ruixuan, LIU Ximeng, SHAO Jun, LIU Baojun
Format: Article
Language:English
Published: POSTS&TELECOM PRESS Co., LTD 2024-10-01
Series:网络与信息安全学报
Subjects:
Online Access:http://www.cjnis.com.cn/thesisDetails#10.11959/j.issn.2096-109x.2024067
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author DUAN Liying
LI Ruixuan
LIU Ximeng
SHAO Jun
LIU Baojun
author_facet DUAN Liying
LI Ruixuan
LIU Ximeng
SHAO Jun
LIU Baojun
author_sort DUAN Liying
collection DOAJ
description The encrypted DNS protocol was originally designed to protect DNS communication privacy between users and recursive resolvers (user-recursive side). Currently, encrypted DNS communication has been widely deployed. However, DNS communications between recursive resolvers and authoritative servers (recursive-authoritative side) still faced significant privacy threats. To address this issue, the Internet Engineering Task Force (IETF) officially released RFC 9539 in February 2024, which utilized the encrypted DNS protocol to protect DNS communication privacy on the recursive-authoritative side. Focusing on the privacy benefits of deploying the encrypted DNS protocol on the recursive-authoritative side, a method to evaluate the privacy benefits of domain names was proposed. The method defined three levels of privacy benefits by analyzing the number of domain names hosted by authoritative servers of the target domain name. Combined with the zone files of 1058 top-level domains, the privacy benefit level was determined for 2.43 million popular domain names and 40 thousand sensitive domain names. The results showed that over 90% of domain names could achieve privacy protection through the deployment of encrypted DNS on the recursive-authoritative side. However, 6.28% of sensitive domain names could not benefit from such deployment. In addition, some popular domain names also did not gain privacy benefits. Compared to large domain hosting providers, smaller providers could offer higher privacy benefits for domain names. Administrators were advised not to deploy domains on authoritative servers that hosted only a single domain name, which significantly compromised the privacy protection effectiveness of encrypted DNS protocol deployment on the recursive-authoritative side.
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series 网络与信息安全学报
spelling doaj-art-38e89ade354846cba8a5bb4cc4a2c58c2025-01-15T03:17:23ZengPOSTS&TELECOM PRESS Co., LTD网络与信息安全学报2096-109X2024-10-0110718077772454Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative serversDUAN LiyingLI RuixuanLIU XimengSHAO JunLIU BaojunThe encrypted DNS protocol was originally designed to protect DNS communication privacy between users and recursive resolvers (user-recursive side). Currently, encrypted DNS communication has been widely deployed. However, DNS communications between recursive resolvers and authoritative servers (recursive-authoritative side) still faced significant privacy threats. To address this issue, the Internet Engineering Task Force (IETF) officially released RFC 9539 in February 2024, which utilized the encrypted DNS protocol to protect DNS communication privacy on the recursive-authoritative side. Focusing on the privacy benefits of deploying the encrypted DNS protocol on the recursive-authoritative side, a method to evaluate the privacy benefits of domain names was proposed. The method defined three levels of privacy benefits by analyzing the number of domain names hosted by authoritative servers of the target domain name. Combined with the zone files of 1058 top-level domains, the privacy benefit level was determined for 2.43 million popular domain names and 40 thousand sensitive domain names. The results showed that over 90% of domain names could achieve privacy protection through the deployment of encrypted DNS on the recursive-authoritative side. However, 6.28% of sensitive domain names could not benefit from such deployment. In addition, some popular domain names also did not gain privacy benefits. Compared to large domain hosting providers, smaller providers could offer higher privacy benefits for domain names. Administrators were advised not to deploy domains on authoritative servers that hosted only a single domain name, which significantly compromised the privacy protection effectiveness of encrypted DNS protocol deployment on the recursive-authoritative side.http://www.cjnis.com.cn/thesisDetails#10.11959/j.issn.2096-109x.2024067domain name systemencrypted DNSprivacy protectioninternet measurement
spellingShingle DUAN Liying
LI Ruixuan
LIU Ximeng
SHAO Jun
LIU Baojun
Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers
网络与信息安全学报
domain name system
encrypted DNS
privacy protection
internet measurement
title Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers
title_full Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers
title_fullStr Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers
title_full_unstemmed Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers
title_short Measurement and evaluation for privacy benefits of deploying encrypted DNS protocol between recursive and authoritative servers
title_sort measurement and evaluation for privacy benefits of deploying encrypted dns protocol between recursive and authoritative servers
topic domain name system
encrypted DNS
privacy protection
internet measurement
url http://www.cjnis.com.cn/thesisDetails#10.11959/j.issn.2096-109x.2024067
work_keys_str_mv AT duanliying measurementandevaluationforprivacybenefitsofdeployingencrypteddnsprotocolbetweenrecursiveandauthoritativeservers
AT liruixuan measurementandevaluationforprivacybenefitsofdeployingencrypteddnsprotocolbetweenrecursiveandauthoritativeservers
AT liuximeng measurementandevaluationforprivacybenefitsofdeployingencrypteddnsprotocolbetweenrecursiveandauthoritativeservers
AT shaojun measurementandevaluationforprivacybenefitsofdeployingencrypteddnsprotocolbetweenrecursiveandauthoritativeservers
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