User authentication

[eluser]Vitsaus[/eluser]
Is there any built in ways to make user authentication, check if user is authenticated and so on?

I didn't find anything directly from documentation and I'll think there is nothing available for now.

Are there any good way to make user authentication at the moment(plugins, libraries...) that you can recommend?

Edit: some more information might be required. Simple login class won't be enough since my site will have something like 200 users/customers and I need some way to check their access rights on certain parts in my site.

And I need some recommendations for good user group control plugin/library if there is any.

[eluser]kgill[/eluser]
Did you search the forums? There are dozens of discussions involving authorization/authentication here and most of them link to the various user contributed libs. If none of those satisfy your needs then you'll have to roll your own as CI doesn't provide any built-in.

[eluser]therealmaloy[/eluser]
Vitsaus

check redux authentication...

[eluser]Adam Griffiths[/eluser]
Even though I made one myself and think it's great!!

Check out the wiki, there's most of the auth libraries that's out there.