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In the context of the "The Complete Kali Linux Installation & Hardening Course 2026: From Zero to Expert!", which of the following kernel hardening techniques, specifically discussed in the course for mitigating privilege escalation vulnerabilities, involves modifying the kernel's default behavior to restrict access to specific system calls based on the execution context?
Considering the "The Complete Kali Linux Installation & Hardening Course 2026: From Zero to Expert!", when hardening the SSH service to prevent brute-force attacks and unauthorized access, which configuration directive within `sshd_config` is most effective for limiting the number of authentication attempts allowed from a single IP address within a specified time frame, thereby preventing dictionary attacks?
According to "The Complete Kali Linux Installation & Hardening Course 2026: From Zero to Expert!", when implementing filesystem integrity monitoring as a hardening measure, what is the primary advantage of using a tool like AIDE (Advanced Intrusion Detection Environment) over simple file checksumming scripts?
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