Recommendations for maintaining iOS 4 security.
With the release of iOS 4, some security settings that could only be applied through the iPhone Configuration Utility can now be found in Settings > General > Restrictions. This includes disabling the camera and built-in iOS applications like Safari and YouTube.
For other important settings, such as the ability to force encrypted backups, set more complex PINs, and enable remote wipes, the iPhone Configuration Utility is a free tool that Apple provides directly through its website http://www.apple.com/support/iphone/enterprise/. Full instructions on how to use this tool are provided at the same location.