VoIP Security and Hacking

  1. Securing VoIP Infrastructure
    1. Network-Level Security
      1. Network Segmentation and Segregation
        1. Voice VLANs
          1. Isolating Voice and Data Traffic
            1. Micro-Segmentation
              1. Zero Trust Architecture
              2. VoIP-Aware Firewalls and Access Control Lists (ACLs)
                1. Stateful Inspection for VoIP
                  1. Dynamic Port Handling
                    1. Application Layer Filtering
                      1. Deep Packet Inspection
                      2. Intrusion Detection and Prevention Systems (IDS/IPS)
                        1. VoIP-Specific Attack Signatures
                          1. Anomaly Detection for VoIP Traffic
                            1. Real-Time Threat Response
                              1. Behavioral Analysis
                              2. Network Access Control (NAC)
                                1. Device Authentication
                                  1. Policy Enforcement
                                    1. Quarantine Mechanisms
                                  2. Securing Session Border Controllers (SBCs)
                                    1. Topology Hiding
                                      1. Concealing Internal Network Structure
                                        1. IP Address Translation
                                        2. Protocol Normalization
                                          1. Enforcing Protocol Compliance
                                            1. Message Validation
                                              1. Header Manipulation
                                              2. Rate Limiting and Throttling
                                                1. Preventing Flood Attacks
                                                  1. Call Rate Limiting
                                                    1. Registration Rate Limiting
                                                    2. Access Control Policies
                                                      1. Whitelisting Trusted Sources
                                                        1. Blacklisting Malicious Sources
                                                          1. Geographic Restrictions
                                                          2. Media Security Functions
                                                            1. Media Encryption Enforcement
                                                              1. Media Flow Control
                                                                1. Codec Restrictions
                                                              2. Hardening VoIP Servers and PBXs
                                                                1. Secure Configuration Baselines
                                                                  1. Disabling Unused Features
                                                                    1. Security Configuration Guides
                                                                      1. Compliance Standards
                                                                      2. Disabling Unnecessary Services
                                                                        1. Minimizing Attack Surface
                                                                          1. Service Inventory
                                                                          2. Patch Management and Updates
                                                                            1. Timely Application of Security Patches
                                                                              1. Vulnerability Management
                                                                                1. Change Management Processes
                                                                                2. Securing Web Management Interfaces
                                                                                  1. Enforcing HTTPS
                                                                                    1. Restricting Access by IP
                                                                                      1. Multi-Factor Authentication
                                                                                        1. Session Management
                                                                                        2. Database Security
                                                                                          1. Database Hardening
                                                                                            1. Access Controls
                                                                                              1. Encryption at Rest
                                                                                            2. Endpoint Security
                                                                                              1. Device Provisioning Security
                                                                                                1. Secure Provisioning Protocols
                                                                                                  1. Authentication of Provisioning Servers
                                                                                                    1. Certificate-Based Provisioning
                                                                                                    2. Hardening IP Phone Configurations
                                                                                                      1. Disabling Unused Services
                                                                                                        1. Enforcing Strong Passwords
                                                                                                          1. Firmware Security
                                                                                                            1. Boot Security
                                                                                                            2. Softphone Security Best Practices
                                                                                                              1. Secure Storage of Credentials
                                                                                                                1. Application Updates
                                                                                                                  1. Sandboxing
                                                                                                                    1. Code Signing Verification
                                                                                                                    2. Physical Security of Devices
                                                                                                                      1. Preventing Device Theft
                                                                                                                        1. Tamper Resistance
                                                                                                                          1. Secure Boot Mechanisms
                                                                                                                          2. Mobile Device Security
                                                                                                                            1. Mobile Device Management (MDM)
                                                                                                                              1. Application Wrapping
                                                                                                                                1. Container Security

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                                                                                                                            5. Common VoIP Attacks and Exploits

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                                                                                                                            7. Cryptography in VoIP