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Network infrastructure attacks

Attack pattern

Network infrastructure attacks target the physical and logical components forming the backbone of internet routing systems. These attacks focus on internet exchange points, route servers, management interfaces, and supporting systems that enable BGP operations. By compromising critical infrastructure elements, adversaries can achieve widespread impact on routing integrity, traffic flow, and network stability across multiple autonomous systems.

1. Network infrastructure attacks [OR]

    1.1 Internet exchange point and route server targeting [OR]
    
        1.1.1 Compromised internet exchange point route server software
            1.1.1.1 Exploitation of software vulnerabilities in route server implementations
            1.1.1.2 Configuration manipulation via administrative access
            1.1.1.3 Malicious route injection through compromised server instances
            1.1.1.4 Denial of service against route server functionality
            
        1.1.2 BGP peering link interception
            1.1.2.1 Physical link compromise at exchange points
            1.1.2.2 Optical signal tapping on peering connections
            1.1.2.3 Switching infrastructure compromise for traffic diversion
            1.1.2.4 VLAN hopping and layer 2 attacks against peering networks
            
        1.1.3 Route reflector compromise
            1.1.3.1 Exploitation of route reflector software vulnerabilities
            1.1.3.2 Reflection attack amplification through compromised reflectors
            1.1.3.3 Malicious route propagation via reflector infrastructure
            1.1.3.4 Resource exhaustion attacks against reflector systems
            
    1.2 Management interface exploitation [OR]
    
        1.2.1 Exposed BGP monitoring systems
            1.2.1.1 Unauthorised access to BGP monitoring platforms
            1.2.1.2 Information leakage from route collection systems
            1.2.1.3 Manipulation of monitoring data for false analysis
            1.2.1.4 Denial of service against network visibility systems
            
        1.2.2 Compromised SSH keys for router access
            1.2.2.1 Theft of private keys from management systems
            1.2.2.2 Exploitation of weak key generation algorithms
            1.2.2.3 Compromise of key management systems
            1.2.2.4 Session hijacking via key compromise
            
        1.2.3 Default credentials on administrative interfaces
            1.2.3.1 Exploitation of factory default passwords
            1.2.3.2 Weak authentication protocol support
            1.2.3.3 Credential brute force attacks
            1.2.3.4 Authentication bypass via misconfiguration
            
        1.2.4 TCP authentication option key material theft via configuration leaks
            1.2.4.1 Interception of configuration backups
            1.2.4.2 Compromise of source code repositories containing keys
            1.2.4.3 Debug information leakage with key material
            1.2.4.4 Memory dump analysis for key extraction
            
    1.3 Supporting system compromise [OR]
    
        1.3.1 Network Time Protocol exploitation
            1.3.1.1 Time synchronisation attacks affecting BGP operations
            1.3.1.2 NTP server compromise for timeline manipulation
            1.3.1.3 Amplification attacks using NTP services
            1.3.1.4 Exploitation of protocol vulnerabilities in time synchronisation
            
        1.3.2 Domain Name System infrastructure targeting
            1.3.2.1 DNS resolver compromise for BGP peer resolution
            1.3.2.2 Cache poisoning attacks affecting route announcements
            1.3.2.3 Denial of service against DNS infrastructure
            1.3.2.4 Exploitation of DNSSEC implementation vulnerabilities
            
        1.3.3 Certificate authority and PKI targeting
            1.3.3.1 CA compromise for fraudulent certificate issuance
            1.3.3.2 Certificate revocation list manipulation
            1.3.3.3 Trust store poisoning attacks
            1.3.3.4 Theft of cryptographic key material from PKI systems
            
    1.4 Physical infrastructure attacks [OR]
    
        1.4.1 Data centre physical security compromise
            1.4.1.1 Unauthorised physical access to networking equipment
            1.4.1.2 Hardware tampering and implant installation
            1.4.1.3 Power supply manipulation attacks
            1.4.1.4 Environmental control system compromise
            
        1.4.2 Optical network targeting
            1.4.2.1 Fibre optic cable tapping and interception
            1.4.2.2 Optical signal amplification attacks
            1.4.2.3 Wavelength division multiplexing manipulation
            1.4.2.4 Optical switching infrastructure compromise
            
        1.4.3 Supply chain compromise
            1.4.3.1 Hardware implant insertion during manufacturing
            1.4.3.2 Firmware modification during distribution
            1.4.3.3 Malicious software pre-installation
            1.4.3.4 Documentation and specification manipulation

Why it works

  • Centralised infrastructure: Internet exchange points and route servers represent concentrated points of failure

  • Management complexity: Large networks have numerous management interfaces and access points

  • Legacy systems: Critical infrastructure often runs on outdated systems with known vulnerabilities

  • Physical access requirements: Physical security measures may be inadequate or inconsistently applied

  • Supply chain trust: Global supply chains introduce multiple points of potential compromise

  • Operational transparency: Monitoring and management systems require exposure that can be exploited

  • Configuration complexity: Complex network configurations often contain security oversights

Mitigation

Internet exchange point security hardening

  • Action: Implement comprehensive security measures for exchange point infrastructure

  • How:

    • Regular security assessments of route server software

    • Strict access controls for exchange point management

    • Network segmentation between peering and management networks

    • Continuous monitoring of exchange point traffic patterns

  • Configuration example (IXP security policy):

ixp-security
 route-server-protection
  software-updates automatic
  access-control strict
  monitoring continuous
 physical-security
  access-logging required
  multi-factor-authentication enabled
 network-segmentation
  management-network isolated
  peering-network monitored

Management interface protection

  • Action: Secure all management interfaces and access methods

  • How:

    • Implement multi-factor authentication for all administrative access

    • Use dedicated management networks with strict access controls

    • Regularly rotate credentials and cryptographic keys

    • Monitor all management access for anomalous behaviour

  • Management security framework:

management-security
 authentication
  multi-factor-required
  strong-passwords enforced
  regular-rotation enabled
 network-access
  dedicated-management-vrf required
  access-lists strict
 monitoring
  full-logging enabled
  real-time-alerting enabled

Key material protection

  • Action: Implement robust protection for cryptographic key material

  • How:

    • Use hardware security modules for key storage

    • Implement key management policies with regular rotation

    • Secure configuration storage and backup systems

    • Monitor for key material leakage

  • Key protection measures:

key-protection
 storage
  hsm-required
  encrypted-backups required
 management
  rotation-policy 90-days
  access-control strict
 monitoring
  leakage-detection enabled
  unauthorized-access-alerting enabled

Physical security enhancement

  • Action: Strengthen physical security measures for critical infrastructure

  • How:

    • Implement biometric access controls for data centres

    • Use tamper-evident hardware and monitoring

    • Deploy environmental monitoring systems

    • Conduct regular physical security audits

  • Physical security controls:

physical-security
 access-controls
  biometric-verification required
  access-logging continuous
 environmental-monitoring
  temperature monitoring
  power-quality monitoring
  physical-tamper detection
 audit-schedule
  quarterly-assessments required
  random-inspections enabled

Supply chain security

  • Action: Implement supply chain security measures for networking equipment

  • How:

    • Verify equipment authenticity through trusted suppliers

    • Conduct security assessments of received equipment

    • Implement firmware verification and validation

    • Maintain equipment provenance records

  • Supply chain security framework:

supply-chain-security
 vendor-vetting
  security-assessment required
  trust-verification enabled
 equipment-validation
  firmware-verification required
  hardware-authenticity-checking enabled
 provenance-tracking
  full-equipment-history maintained
  chain-of-custody documented

Continuous monitoring and response

  • Action: Implement comprehensive monitoring and incident response capabilities

  • How:

    • Deploy network detection and response systems

    • Implement security information and event management

    • Conduct regular security assessments and penetration testing

    • Maintain incident response readiness

  • Monitoring implementation:

security-monitoring
 network-detection
  ndr-system enabled
  full-packet-capture available
 security-information
  siem-integration enabled
  correlation-rules updated-daily
 incident-response
  readiness-tested quarterly
  playbooks maintained

Key insights from real-world implementations

  • Concentrated risk: Internet exchange points represent significant concentration of routing risk

  • Management interface exposure: Many attacks originate through compromised management systems

  • Physical security gaps: Physical access controls are often weaker than network security measures

  • Supply chain transparency: Limited visibility into equipment supply chains creates security risks

  • Operational complexity: Large networks struggle with consistent security implementation

  • Zero trust architecture: Implementation of zero trust principles for network infrastructure

  • Automated security compliance: Development of automated security policy enforcement

  • Enhanced monitoring: Advanced analytics and machine learning for threat detection

  • Supply chain verification: Improved methods for equipment authenticity verification

  • Cross-organisational collaboration: Enhanced sharing of security best practices and threat intelligence

Conclusion

Network infrastructure attacks pose a severe threat to the stability and security of global internet routing. These attacks target critical components including internet exchange points, route servers, management interfaces, and physical infrastructure. Comprehensive mitigation requires a multi-layered approach encompassing technical controls, physical security measures, supply chain verification, and continuous monitoring. As attacks become increasingly sophisticated, organisations must prioritise infrastructure security through rigorous access controls, regular security assessments, and implementation of defence-in-depth strategies. The protection of critical networking infrastructure demands ongoing investment, vigilance, and collaboration across the internet community to ensure the continued reliability and security of global routing systems.