Determine whether security is needed for your mobile portal. If so, you must assess what kind is appropriate.
Develop your growth requirements by answering the following questions:
What are your general security policies?
Do you use the Identity Server software to provide single sign-on to your portal? Will your single sign-on requirements change for mobile access? Should your mobile portal users be able to sign on automatically?
Is a gateway needed?
Is SSL required for authentication to the portal?
Is SSL required for any other part of the portal?