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would like to setup MFA authentication for users accessing my site on the internet. is there a way to embedd in my web site a start up code
is there any solution ready for that perpse
the site is public , so meany clients can ping it so ...
is there a way to embed in my web site a start up code
Probably not but it depends on your existing solution. You tagged this question with two completely different frameworks so we have no idea which framework you are targeting. Secondly, you did not tell us how your current security works or if you are using an existing account API.
.NET comes with Identity which has multi-factor authentication built in. You just need to configure the API which is covered in the docs for the framework you are targeting.
The following tutorial is for ASP.NET Core and Identity.
Multi-factor authentication in ASP.NET Core
Is there any way you can tell us about your application? How it works? The target framework?
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as coding a MFA service is very complex (you typically need Phone, SMS or mobile app support), you need to pick a provider. that provider will supply a sdk. Azure, Google, AWS all supply MFA providers, but there are other.
Also many oauth providers (Azure, AWS, Google, etc) also implement MFA for you.
The TOTP-based 2FA is included in the ASP.NET Core project created by using the Visual Studio 2022 template with the authentication for the individual account. See the following document:
MFA TOTP (Time-based One-time Password Algorithm)