Invention Grant
- Patent Title: Methods and nodes for deactivating server name indication, SNI, encryption in a telecommunication network
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Application No.: US18023765Application Date: 2021-06-02
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Publication No.: US12302091B2Publication Date: 2025-05-13
- Inventor: Miguel Angel Muñoz De La Torre Alonso , Maria Luisa Mas Rosique , Marcus Ihlar
- Applicant: Telefonaktiebolaget LM Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Sonoda & Kobayashi Intellectual Property Law
- Agent Sarvajit S. Patil
- Priority: EP20382775 20200901
- International Application: PCT/EP2021/064811 WO 20210602
- International Announcement: WO2022/048802 WO 20220310
- Main IPC: H04W12/033
- IPC: H04W12/033 ; H04L61/4511 ; H04W12/0431

Abstract:
A method for deactivating Server Name Indication, SNI, encryption in a telecommunication network, wherein said telecommunication network comprises a Domain Name System, DNS, server, said method comprising the steps of receiving, by said DNS server, from a User Equipment, UE, a DNS query comprising a Domain Name to be converted to an Internet Protocol, IP, address, determining, by said DNS server, that SNI encryption is to be deactivated for subsequent traffic associated with said Domain Name, forwarding, by said DNS server, said DNS query to an external DNS server, wherein said DNS query comprises said Domain Name and a request for deactivating SNI encryption, receiving, by said DNS server, from said external DNS server, a DNS answer, wherein said DNS answer comprises said converted IP address and wherein said DNS answer is free from encryption keys for encrypting SNI and forwarding, by said DNS server, said DNS answer comprising said converted IP address to said UE, wherein said DNS answer is free from encryption keys such that said UE is not able to encrypt said SNI in said subsequent traffic.
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