To add further value to Vikash's comment , below is the download link for the Protector standalone version.
https://support.hitachivantara.com/en/user/answers/downloads/downloads-detail.html?d=Ops%20Center%20Protector&pptype=Software%20Version
Download the protector software distribution binary. In a nutshell, if you are installing on a VM then one VM will be for Master and the other one will be for ISM, protector master must be installed first then go ahead for ISM, the rest everything can be found in the document whose link has been shared by Vikash. Hope this will help you.