What is the TLS version for SystemDefault as an output for ServicePointManager.SecurityProtocol in powershell?

Question

I'm using powershell cmdlet to identify the SecurityProtocol we used in powershell.

PS /app> [System.Runtime.InteropServices.RuntimeEnvironment]::GetSystemVersion()
v8.0.4
PS /app> [Net.ServicePointManager]::SecurityProtocol
SystemDefault
PS /app> 

I'm getting SystemDefault as an answer which means we were not using TLS 1.0 right?

If we used we want to upgrad to TLS 2.0 because of deprecation announcement from Microsoft - https://learn.microsoft.com/en-us/security/engineering/solving-tls1-problem#testing-with-tls-12 , what needs to be done?

Answer 1

Hi,

SystemDefault is the recommended secure default which allows the operating system to choose the best protocol to use and to block insecure protocols.

https://learn.microsoft.com/en-us/dotnet/api/system.net.securityprotocoltype?view=net-8.0

Please the TLS protocol version support in different windows versions can be found here.

https://learn.microsoft.com/en-us/windows/win32/secauthn/protocols-in-tls-ssl--schannel-ssp-#tls-protocol-version-support

Best Regards,

Ian Xue

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