Where would the monitoring engine be deployed when using a network-based DLP system?

Deploying the monitoring engine near the organizational gateway is optimal for a network-based Data Loss Prevention (DLP) system because this location allows for comprehensive visibility and control over data that enters or exits the network. By positioning the monitoring engine at the gateway, it can effectively inspect and analyze traffic passing through the organization's perimeter, enabling the identification of sensitive data and potential breaches in real time. This strategic placement helps in managing data flows and enforcing security policies across the entire network.

The vulnerability of data transmission typically occurs at the point where the network connects to external sources. Thus, having the monitoring engine here maximizes its ability to mitigate risks associated with data loss or leakage. This setup ensures that any unauthorized data leaving or sensitive information coming into the organization is promptly monitored and logged, providing a proactive stance on data security.

Other placements, such as on a VLAN, in the storage system, or on a user's workstation, do not provide the same level of oversight and control over the data as it flows into and out of the organizational network. This can result in gaps in monitoring capabilities, making it difficult to enforce comprehensive DLP policies effectively.