The current version of Duo for Windows Authentication supports TLS 1.2 when installed on a version of Windows that also supports and uses TLS 1.2 or higher. TLS RequirementsĮffective June 30, 2023, Duo no longer supports TLS 1.0 or 1.1 connections or insecure TLS/SSL cipher suites. See Duo Knowledge Base article 7546 for additional guidance. If your organization requires IP-based rules, please review Duo Knowledge Base article 1337.Įffective June 30, 2023, Duo no longer supports TLS 1.0 or 1.1 connections or insecure TLS/SSL cipher suites. This application communicates with Duo's service on SSL TCP port 443.įirewall configurations that restrict outbound access to Duo's service with rules using destination IP addresses or IP address ranges aren't recommended, since these may change over time to maintain our service's high availability.
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