Network Traffic Monitoring and Analysis

  1. Core Analysis Techniques
    1. Establishing Network Baselines
      1. Identifying Normal Traffic Patterns
        1. Time-of-Day Variations
          1. Business Hours Traffic
            1. Off-Hours Traffic
              1. Weekend Patterns
              2. Application-Specific Patterns
                1. Database Traffic
                  1. Web Traffic
                    1. Email Traffic
                  2. Measuring Key Performance Metrics
                    1. Bandwidth Utilization
                      1. Interface Utilization
                        1. Peak Usage Periods
                        2. Latency Measurements
                          1. Round-Trip Time
                            1. One-Way Delay
                              1. Jitter Calculations
                              2. Packet Loss Analysis
                                1. Loss Rates
                                  1. Loss Patterns
                                    1. Impact Assessment
                                    2. Throughput Analysis
                                      1. Application Throughput
                                        1. Protocol Efficiency
                                          1. Goodput Measurements
                                      2. Protocol Analysis
                                        1. Decoding Protocol Headers
                                          1. Header Field Analysis
                                            1. Field Values
                                              1. Field Relationships
                                                1. Protocol Compliance
                                                2. Protocol-Specific Details
                                                  1. Protocol State Machines
                                                    1. Protocol Timers
                                                      1. Protocol Options
                                                    2. Analyzing Protocol Conversations
                                                      1. Session Tracking
                                                        1. Session Establishment
                                                          1. Session Maintenance
                                                            1. Session Termination
                                                            2. Sequence Analysis
                                                              1. Packet Ordering
                                                                1. Sequence Numbers
                                                                  1. Acknowledgment Analysis
                                                                2. Identifying Protocol Anomalies
                                                                  1. Non-Standard Protocol Usage
                                                                    1. Protocol Violations
                                                                      1. Unusual Implementations
                                                                        1. Custom Protocols
                                                                        2. Protocol Errors
                                                                          1. Malformed Packets
                                                                            1. Invalid Field Values
                                                                              1. Checksum Errors
                                                                          2. Conversation and Flow Analysis
                                                                            1. Tracking Conversations by IP Pairs
                                                                              1. Source and Destination Analysis
                                                                                1. Communication Patterns
                                                                                  1. Directional Analysis
                                                                                    1. Peer Relationships
                                                                                    2. Geographic Analysis
                                                                                      1. Location Mapping
                                                                                        1. Regional Traffic Patterns
                                                                                          1. International Communications
                                                                                        2. Analyzing Flow Volume and Duration
                                                                                          1. High-Volume Flows
                                                                                            1. Bandwidth Consumption
                                                                                              1. Data Transfer Analysis
                                                                                                1. Bulk Transfer Detection
                                                                                                2. Long-Lived Connections
                                                                                                  1. Connection Duration
                                                                                                    1. Persistent Connections
                                                                                                      1. Connection Patterns
                                                                                                    2. Identifying Top Talkers and Listeners
                                                                                                      1. Bandwidth Consumption Analysis
                                                                                                        1. Top Senders
                                                                                                          1. Top Receivers
                                                                                                            1. Bidirectional Analysis
                                                                                                            2. Communication Frequency
                                                                                                              1. Connection Counts
                                                                                                                1. Session Frequency
                                                                                                                  1. Temporal Patterns
                                                                                                              2. Payload Inspection
                                                                                                                1. Deep Packet Inspection
                                                                                                                  1. Application Layer Analysis
                                                                                                                    1. Application Identification
                                                                                                                      1. Content Analysis
                                                                                                                        1. Protocol Reconstruction
                                                                                                                        2. Content Filtering
                                                                                                                          1. Keyword Detection
                                                                                                                            1. Pattern Matching
                                                                                                                              1. Content Classification
                                                                                                                            2. Data Exfiltration Detection
                                                                                                                              1. Unusual Data Transfers
                                                                                                                                1. Large File Transfers
                                                                                                                                  1. Encrypted Transfers
                                                                                                                                    1. Off-Hours Transfers
                                                                                                                                    2. Sensitive Data Identification
                                                                                                                                      1. Data Loss Prevention
                                                                                                                                        1. Pattern Recognition
                                                                                                                                          1. Content Scanning
                                                                                                                                        2. Malware Detection
                                                                                                                                          1. Signature Matching
                                                                                                                                            1. Known Malware Signatures
                                                                                                                                              1. Behavioral Signatures
                                                                                                                                                1. Heuristic Detection
                                                                                                                                                2. Command and Control Detection
                                                                                                                                                  1. C2 Communication Patterns
                                                                                                                                                    1. Beaconing Detection
                                                                                                                                                      1. Domain Analysis
                                                                                                                                                  2. Anomaly Detection
                                                                                                                                                    1. Statistical Anomaly Detection
                                                                                                                                                      1. Threshold-Based Alerts
                                                                                                                                                        1. Static Thresholds
                                                                                                                                                          1. Dynamic Thresholds
                                                                                                                                                            1. Adaptive Thresholds
                                                                                                                                                            2. Outlier Detection
                                                                                                                                                              1. Statistical Methods
                                                                                                                                                                1. Distribution Analysis
                                                                                                                                                                  1. Deviation Metrics
                                                                                                                                                                2. Behavioral Anomaly Detection
                                                                                                                                                                  1. User Behavior Analytics
                                                                                                                                                                    1. Normal Behavior Profiles
                                                                                                                                                                      1. Deviation Detection
                                                                                                                                                                        1. Risk Scoring
                                                                                                                                                                        2. Entity Behavior Analytics
                                                                                                                                                                          1. Device Behavior
                                                                                                                                                                            1. Application Behavior
                                                                                                                                                                              1. Network Behavior
                                                                                                                                                                            2. Machine Learning Approaches
                                                                                                                                                                              1. Supervised Learning
                                                                                                                                                                                1. Classification Models
                                                                                                                                                                                  1. Training Data Requirements
                                                                                                                                                                                    1. Model Validation
                                                                                                                                                                                    2. Unsupervised Learning
                                                                                                                                                                                      1. Clustering Algorithms
                                                                                                                                                                                        1. Anomaly Scoring
                                                                                                                                                                                          1. Pattern Discovery

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                                                                                                                                                                                    4. Tools for Traffic Monitoring and Analysis

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                                                                                                                                                                                    6. Performance Management and Troubleshooting