how to check user account and password in another domain controller?

[sincethe2004]

By using <authentication mode="Forms" > in web.config, we can create
self-designed login page, but how to check user's account and password is
vaild in another domain controller?

Does <authentication mode="Windows"> can have self-designed login page?

 

[sincethe2004]

yes, you read right.

Can you explain how you want to authenticate?

I read your post as the web server is on a different domain to the user you want to authenticate.