Ransomware, which penetrates deep into a network and encrypts important data, has become a major threat, and it is important to adopt the idea of zero trust, which does not trust anything even inside the network and keeps communication to a minimum. In order to achieve zero trust even within the network and prevent the spread of threats, microsegmentation, which precisely controls communication on a host-by-host basis called server endpoints, is an effective measure. In this session, we will introduce the features of the solution from Illumio, a leader in host-based segmentation, along with a demo of a specific configuration image.