Network security architecture, futuristic cyberpunk cityscape, neon lights, skyscrapers, complex circuit boards, wires, motherboards, CPUs, servers, firewalls, intrusion detection systems, encryption algorithms, access control lists, biometric authentication, surveillance cameras, monitoring screens, hackers in hoodies, virtual private networks, cloud computing infrastructure, data centers, secure sockets layer protocols, asymmetric cryptography, secure shell protocols, system administrators, IT professionals, futuristic computer interfaces, high-tech laboratories, research facilities.