Our remote lab team has made the Implementing Cisco IOS Network Security remote lab exercises available free-of-charge to ten students. To get access to them, fill in the registration form (and be quick). You'll get access to all 12 IINS remote lab exercises that you can launch until October 12th. The only thing we expect in return is that you actually use them and report your opinion using the "customer satisfaction" surveys that will be mailed to you after each exercise.
The IINS course is the recommended training for the CCNA Security certification.