CREST Practitioner Security Analyst (CPSA) 2025 – 400 Free Practice Questions to Pass the Exam

Port 567 is associated specifically with the DHCPv6 protocol, which stands for Dynamic Host Configuration Protocol for IPv6. This protocol is essential for the automatic configuration of devices on an IPv6 network, allowing them to receive the necessary network configuration details, such as IP addresses, subnet masks, and various other settings, without manual intervention.

In the context of DHCPv6, the servers listen for client requests on port 567. Utilizing this port enables seamless communication and negotiation between clients seeking configuration information and the DHCPv6 servers that provide it. This is critical for the efficient management of larger networks transitioning to or operating under the IPv6 standard.

The other protocols listed utilize different ports, which means they wouldn't be relevant for this particular question. DNS (Domain Name System), for example, operates on port 53; HTTP (Hypertext Transfer Protocol) typically uses port 80; and FTP (File Transfer Protocol) relies on ports 20 and 21. Understanding the specific ports associated with various protocols is crucial for network security analysts, as it helps in monitoring and securing network traffic effectively.