Linux Security

  1. System Auditing, Logging, and Monitoring
    1. System Logging Architecture
      1. Logging Concepts
        1. Log Levels
          1. Log Facilities
            1. Log Formats
              1. Log Rotation
              2. Syslog Implementation
                1. rsyslog Configuration
                  1. Log Filtering
                    1. Remote Logging
                      1. Log Forwarding
                      2. systemd Journal
                        1. Journal Structure
                          1. journalctl Usage
                            1. Persistent Logging
                              1. Log Filtering
                                1. Performance Considerations
                              2. Centralized Logging
                                1. Log Aggregation
                                  1. ELK Stack Integration
                                    1. Fluentd Configuration
                                      1. Logstash Setup
                                      2. Remote Log Collection
                                        1. Secure Log Transport
                                          1. Log Forwarding Protocols
                                            1. Reliability Mechanisms
                                            2. Log Storage and Retention
                                              1. Storage Requirements
                                                1. Compression Strategies
                                                  1. Archival Policies
                                                2. Linux Audit Framework
                                                  1. Audit Architecture
                                                    1. Kernel Audit Subsystem
                                                      1. auditd Daemon
                                                        1. Audit Rules Engine
                                                          1. Log Processing
                                                          2. Audit Rule Configuration
                                                            1. File and Directory Monitoring
                                                              1. System Call Auditing
                                                                1. User Activity Tracking
                                                                  1. Network Activity Monitoring
                                                                  2. Audit Log Management
                                                                    1. Log Format Understanding
                                                                      1. ausearch Usage
                                                                        1. aureport Generation
                                                                          1. Log Analysis Techniques
                                                                          2. Audit Performance
                                                                            1. Rule Optimization
                                                                              1. Buffer Management
                                                                                1. Impact Minimization
                                                                              2. File Integrity Monitoring
                                                                                1. AIDE (Advanced Intrusion Detection Environment)
                                                                                  1. Database Initialization
                                                                                    1. Configuration Rules
                                                                                      1. Check Execution
                                                                                        1. Report Analysis
                                                                                          1. Automated Monitoring
                                                                                          2. Tripwire
                                                                                            1. Policy Configuration
                                                                                              1. Database Management
                                                                                                1. Integrity Checking
                                                                                                  1. Report Generation
                                                                                                  2. Samhain
                                                                                                    1. Distributed Architecture
                                                                                                      1. Client-Server Setup
                                                                                                        1. Alerting Configuration
                                                                                                          1. Database Management
                                                                                                          2. Custom FIM Solutions
                                                                                                            1. inotify Usage
                                                                                                              1. Script-based Monitoring
                                                                                                                1. Integration with SIEM
                                                                                                              2. Security Event Correlation
                                                                                                                1. Log Analysis Techniques
                                                                                                                  1. Pattern Recognition
                                                                                                                    1. Anomaly Detection
                                                                                                                      1. Statistical Analysis
                                                                                                                      2. SIEM Integration
                                                                                                                        1. Event Normalization
                                                                                                                          1. Correlation Rules
                                                                                                                            1. Alert Management
                                                                                                                            2. Threat Intelligence
                                                                                                                              1. IOC Integration
                                                                                                                                1. Feed Management
                                                                                                                                  1. Automated Response

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                                                                                                                              5. Network Security

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                                                                                                                              7. System Hardening