SAP SRM portal switching from HTTP to HTTPS.

Hi,

We have successfully installed the EHP3 SRM 7.0 server based on Netweaver 7.4 Release 1, with ABAP instance and JAVA portal instance.

OS : Windows Server 2012

Database : ORACLE 11.2.0.4

Now our requirement is to use the SRM portal link as https instead of http.

So kindly let us know which steps we have to perform?

Also I have following queries....

1. Do we have to install SAP web-dispatcher?

2. If we have to install SAP web-dispatcher then do we have to install it with different instance name other than the SRM ABAP and JAVA?

3. On which instance we have to install the SSL certificate? on JAVA instance or ABAP instance?

4. Which Web Server we have to configure IIS or APACHE?

Regards,

Amit.