What's the best way to stop search engine's indexing my login pages?

I have a login and registration MVC3 page in my /users directory. I just noticed they got listed on google.

Is there a good and bad way to exclude the开发者_开发问答se from google?

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Short answer: use robots.txt file also add rel="nofollow" attribute for all links that lead to those pages.

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make a robots.txt in your root with:

User-agent: *   
Disallow: <your login page>

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update the urls which you dont want to get indexed by google in robots.txt

Which you can control it from the google.com/webmasters