iPad management in medium sized business
Cisco IPSec deployments can take advantage of certificate-based authentication via
industry-standard X.509 digital certificates. With certificate-based authentication, iPad supports VPN On Demand. VPN On Demand can establish a connection automatically
when accessing predefined domains, which would provide you with seamless VPN connectivity.

For two-factor token-based authentication, iPad supports RSA SecurID as well as
CRYPTOCard. Users enter a PIN and a token-generated, one-time password directly on
iPad when establishing a VPN connection.

Now without jailbreaking, you can't remove/hide the iBooks or any default icon. Unless someone knows otherwise.