Setting up SSL on Web Application Server ABAP

Hello

We are in the middle to configure SSL in SAP ECC 6.0.

I have couple of questions for Common Name (CN) that needs to be define while creating the SSL server PSE.

  a. Should we use server name or SID name or * in CN field? SAP is not supporting * but some non-sap sites

     are suggesting to use *.

  b. In our enviornment, we have CI and more than one dialog instances. If we need to define server name

     in the CN field, do we need to create SSL server PSE for CI and DI's separately (mean multiple SSL

     for one SID).

or is there another option instead to use multiple SSL for one SID.

Pls suggest.

Thanks

Amar