Using windows authentication with php?

Question

Scenario:

I have a area of a website that needs to be secure and accessible when offsite. I want the user to enter the username and password used to login at work i

Answer 1

If you are using LDAP at work, go with that, if not, well you have to access it thru .NET.

Since there are several but not fully reliable .NET implementations for PHP, I would recommend using a WebService, which PHP would consume, that will pass the user and pass - encrypted would be nice - to it, and it will return if the credentials are valid or not.