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titleFor Windows Logon Agent v5.x...

The general way for an administrator to configure is to add or remove cipher suites in the registry editor. The path to do this is "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Cryptography\Configuration\Local\SSL\00010002" and configure ciphers for the multi-string value "Functions".

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titleFor Windows Logon Agent v6.x...

The general way for an administrator to configure is to add or remove cipher suites in the registry editor. The path to do this is "HKEY_LOCAL_MACHINE\SOFTWARE\Deepnet Security\DUAP\WIN" and configure ciphers for the multi-string REG_SZ values "TLS12Ciphers and TLS13Ciphers".

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The supported OpenSSL ciphers can be seen in https://docs.openssl.org/1.1.1/man1/ciphers/#tls-v12-cipher-suites

Seperate the Ciphers with a colon ":".

Windows Logon Agent Version 6.9.0125 build 1112 upwards already includes stong ciphers such as TLS_AES_256_GCM_SHA384:TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256, howver if additional ciphers are required, these can be created in the registry, as per example above.




After changing the settings, the agent service needs to be restarted.

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