Using SSF with an External Security
Product
When using an external security product, such as SAP NetWeaver Single Sign-On, for providing digital signature and encryption support in SAP systems, you must install and configure SSF on each of the front-end computers (see Installing/Configuring SSF: Front Ends) and on the application servers (see Installing/Configuring SSF: Application Server). On the front ends, you can specify the SSF parameter values either in environment variables or in the SSF initialization file ssfrfc.ini. On the application servers, you can use either profile parameters or environment variables.

You can only use environment variables to define the SSF parameters as of Release 4.5.
You also need to maintain user SSF information on the application server.
To test your SSF installation, see Testing the SSF Installation.