Security Measures Overview (ICF) 
To guarantee the security of your ICF connections, include the following points in your setup and take the appropriate measures:
Activate only those services that you really need.
Define authentication methods and logon sequences for users of services.
Use SSL for ICF communication.
Be restrictive when assigning ICF authorizations.
Use the Virtual Host concept of the ICF to avoid HTTP requests being redirected to other servers without permission.