Nmap and Network Scanning

  1. Timing and Performance Optimization
    1. Understanding Nmap Timing
      1. Scan Speed Factors
        1. Network Conditions
          1. Target Responsiveness
          2. Timing Templates (-T0 through -T5)
            1. Paranoid (-T0)
              1. Extremely Slow
                1. Maximum Stealth
                2. Sneaky (-T1)
                  1. Very Slow
                    1. IDS Evasion
                    2. Polite (-T2)
                      1. Slow and Respectful
                        1. Minimal Impact
                        2. Normal (-T3)
                          1. Default Timing
                            1. Balanced Approach
                            2. Aggressive (-T4)
                              1. Fast Scanning
                                1. Reasonable Accuracy
                                2. Insane (-T5)
                                  1. Maximum Speed
                                    1. Potential Inaccuracy
                                  2. Fine-Grained Timing Controls
                                    1. Host Group Size
                                      1. --min-hostgroup
                                        1. --max-hostgroup
                                        2. Parallelism Control
                                          1. --min-parallelism
                                            1. --max-parallelism
                                            2. RTT Timeout Settings
                                              1. --min-rtt-timeout
                                                1. --max-rtt-timeout
                                                  1. --initial-rtt-timeout
                                                  2. Retry Control
                                                    1. --max-retries
                                                      1. Failure Handling
                                                      2. Scan Delay Settings
                                                        1. --scan-delay
                                                          1. --max-scan-delay
                                                          2. Rate Limiting
                                                            1. --min-rate
                                                              1. --max-rate
                                                            2. Performance Optimization Strategies
                                                              1. Target Prioritization
                                                                1. Scan Scope Reduction
                                                                  1. Parallel Scanning
                                                                    1. Resource Allocation
                                                                    2. Network Considerations
                                                                      1. Bandwidth Limitations
                                                                        1. Latency Effects
                                                                          1. Packet Loss Handling
                                                                            1. Congestion Avoidance

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                                                                          8. Advanced Scanning Techniques

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                                                                          10. Firewall and IDS Evasion