7. Microsegmentation Characteristics

Microsegmentation applies very detailed logical access rules inside an IT environment. Rules can be set for individual machines or users and can control which IP addresses can connect, at what time, with which credentials, and which services they can use.

It uses software-based controls, not physical separation, so administrators can enforce rules without adding hardware or manually touching devices.

Its purpose is to stop one compromised system from leading to wider compromise. This supports defense in depth and least privilege by limiting communication only to what is necessary.

It is especially important in shared environments like the cloud, where multiple customers may share infrastructure and cloud provider staff may have physical access to the hardware.

It can also isolate departments or functions. For example, HR systems can be separated so other departments cannot access sensitive employee data.

Microsegmentation is commonly enabled by virtualization and software-defined networking (SDN). In cloud environments, similar controls are often managed through tools such as security groups.

It can also be used in home networks to separate computers from smart devices like TVs, appliances, and other connected systems.

Main Idea Microsegmentation uses software-based rules to tightly control internal communication, isolate systems, and reduce the spread of attacks.