We’re making some changes to Direct Routing SIP interface. On February 1st, 2022 (previously January 3rd 2022), to provide the best-in-class encryption to our customers, we will begin retiring Transport Layer Security (TLS) versions 1.0 and 1.1 and begin obligating TLS1.2 usage for the Direct Routing SIP interface.
- The move to TLS 1.2 is to ensure that our service is secure by default and in alignment with the rest of Microsoft 365 services as previously communicated (MC126199 in Dec 2017, MC128929 in Feb 2018, MC186827 in July 2019, MC218794 in July 2020, MC240160 in February 2021, and MC292797 in October 2021).
Note: If your organization has already taken steps to migrate from TLS 1.0 and 1.1, you can safely disregard this message.
How this will affect your organization
To provide the best-in-class encryption to our customers, we will be retiring Transport Layer Security (TLS) versions 1.0 and 1.1 beginning February 1st, 2022 (previously January 3rd, 2022) and will begin forcing TLS1.2 usage for the Direct Routing SIP interface.
- To avoid any service impact, please make sure that your SBCs are configured to support TLS 1.2 and are able to connect using one of the following cipher suites:TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 i.e. ECDHE-RSA-AES256-GCM-SHA384
- TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 i.e. ECDHE-RSA-AES128-GCM-SHA256
- TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 i.e. ECDHE-RSA-AES256-SHA384
- TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 i.e. ECDHE-RSA-AES128-SHA256
What you need to do to prepare
Review your SBCs and ensure they are configured to support TLS 1.2.
Learn more
Message ID: MC297438
Published: 10 November 2021
Updated: 14 December 2021
#AdminImpact #Retirement #UpdatedMessage
Plan For Change
Alex Lim
Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook
