What does the term 'Rogue' refer to in network security?

In the context of network security, the term 'Rogue' typically refers to systems that do not adhere to the established policies or configurations set by the network security management system and thus could pose a potential security risk. Specifically, these rogue systems fail to communicate with the management infrastructure, such as the ePO server, which is responsible for monitoring and enforcing security measures.

When a system does not communicate with the ePO server, it indicates that it is either unmonitored or unmanaged, thereby creating vulnerabilities that could be exploited by malicious actors. Such systems might lack essential security controls or updates, making them susceptible to cyber threats.

The other options indicate systems that are either managed or monitored correctly. Systems managed by the ePO server are an integral part of the security framework and are monitored to ensure compliance with security protocols. Systems with a Trellix Agent installed or those actively monitored by a sensor are also functioning under administrative oversight. In contrast, it is the lack of communication with the ePO server that characterizes a rogue system, underscoring the significance of maintaining communication for security management.