CREST Practitioner Security Analyst (CPSA) Practice

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What service utilizes port 5666?

VNC
Nagios
SSH
HTTP

The correct answer is: Nagios

Port 5666 is associated with Nagios, a popular open-source monitoring system that enables organizations to monitor their network and infrastructure for performance issues. By utilizing this specific port, Nagios allows for the communication between its monitoring tools and the services it monitors, including the collection of performance metrics and status updates. Nagios uses a client-server architecture, where a server (the Nagios server) communicates with agents deployed on monitored hosts. The use of port 5666 is part of this architecture, allowing for the efficient transfer of monitoring data, which is crucial for identifying and resolving issues promptly. The other options, while relevant to different aspects of network services and protocols, do not utilize port 5666. For instance, VNC typically uses port 5900, SSH operates primarily on port 22, and HTTP corresponds to port 80. This context further clarifies why the service associated with port 5666 is specifically Nagios.