Which detection server type requires a minimum of two physical network interface cards?

Which detection server type requires a minimum of two physical network interface cards?

• A. Network Monitor
• B. Endpoint Monitor
• C. Web Monitor
• D. Network Prevent for Web

Answer: (A)

Understanding why a network-monitoring detection server needs multiple NICs. Network Monitor is designed to passively observe traffic as it flows between network segments. To do this reliably, it must sit on a path between two networks (for example, a mirrored or SPAN port that carries internal traffic and a separate network for management or for connecting to the DLP console). Having at least two physical network interfaces allows the sensor to connect to both sides of the traffic and to capture and inspect data without becoming a bottleneck or a single point of failure. This dual-NIC setup is what enables accurate visibility and safe data handling in a purely network-based monitoring role. Endpoint Monitor works differently: it relies on agents installed on endpoints to report data, so it doesn’t require the sensor to be connected to multiple networks. Web Monitor typically processes traffic via a proxy or gateway path, which can be accomplished with a single interface in many deployments. Network Prevent for Web operates as an inline component in the traffic path, and its NIC requirements depend on the specific deployment, but the passive, two-network placement that Network Monitor uses is specifically tied to that two-NIC need.

Understanding why a network-monitoring detection server needs multiple NICs.

Network Monitor is designed to passively observe traffic as it flows between network segments. To do this reliably, it must sit on a path between two networks (for example, a mirrored or SPAN port that carries internal traffic and a separate network for management or for connecting to the DLP console). Having at least two physical network interfaces allows the sensor to connect to both sides of the traffic and to capture and inspect data without becoming a bottleneck or a single point of failure. This dual-NIC setup is what enables accurate visibility and safe data handling in a purely network-based monitoring role.

Endpoint Monitor works differently: it relies on agents installed on endpoints to report data, so it doesn’t require the sensor to be connected to multiple networks. Web Monitor typically processes traffic via a proxy or gateway path, which can be accomplished with a single interface in many deployments. Network Prevent for Web operates as an inline component in the traffic path, and its NIC requirements depend on the specific deployment, but the passive, two-network placement that Network Monitor uses is specifically tied to that two-NIC need.