KU1, KU2, KU3, KU4: When a user invokes the CMP (Common Management Portal) with his/her web browser, the CMP and the web browser exchange their certificates.
This ensures the following:
CMP and web browser can authenticate themselves as permissible communication partners
Data can be transmitted encrypted.
So that the CMP uses its new certificate, the new keystore for the CMP must be activated on the application computer.
How Activate a Server KeystoreParent topic: Certificate Strategy Overview
Activation of the new keystore for the Common Management Portal.