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Domain Authentication

Domain Authentication

Domain Authentication

Hello, I am currently building out an API with MVC. The server sits somewhere on our network where it is capable of communicating with our LDAP server, which I am hoping to use for authentication. It is easy enough for me to create an API call where they pass up their credentials, and then I verify if they are correct or not. At that step though... I'm wondering if anyone has any advice on where to go. I'm thinking of returning a unique token that their client then uses for future requests, but I also want to ensure that any changes on the domain server, such as a password change or their account being disabled, forces the client to authenticate again. So far the only way I've been able to think of doing this is essentially storing their credentials on the API server, associated with their token, and verifying on every request with the LDAP server that the credentials are still valid. Is this a valid approach? And if it is, what would you consider the best way to store those credentials? And if it isn't a valid approach, how would you handle it?

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