After you have SAP enterprise portal installed, you always need to configure the EP system landscape to connect to plenty of backend systems like R/3, CRM, SRM, etc. Below is some steps to perform this task.
The drawback of this method is it utilizes user password mapping for authentication. The user mapping must be down for each user in the portal and backend system. But for the demo of connection, it is quite easy to implement the connection. I will reconmmend to conduct athentication using logon tickets. For more information, please check below links:
1. Navigate To System Administration –> System Configuration–>System Landscape–>Portal Content.
2. Create a Folder There Say Sap_Sytems.
3. Right Click on the Folder and Go to New , Select System from Template.


