State Grid protocol gateway detects and prevents network attacks

The State Grid Protocol 4G Gateway, when interfacing with the State Grid eCharging platform, employs multi-layered technical and management measures to detect and prevent network attacks. These measures not only protect the integrity and security of data transmission but also effectively address potential network threats. Below are the specific security measures:

State Grid protocol gateway detects and prevents network attacks 国网协议网关如何检测和防范网络攻击

▶ 1. Technical Security Measures

Encrypted Communication and Authentication

  • Encrypted Transmission: TLS (Transport Layer Security) protocol is used to encrypt data, ensuring that data between charging stations and the State Grid platform is not intercepted or tampered with during transmission.
  • Mutual Authentication: TLS mutual authentication mechanism is implemented to verify the identities of both the charging station and the platform, preventing unauthorized devices from accessing the network.
  • Key Management: Adheres to international standards such as IEC 62351 for secure key management in communication, ensuring the reliability of data encryption.

Intrusion Detection and Real-Time Monitoring

  • Intrusion Detection System (IDS): IDS is deployed within gateways and network devices to monitor network traffic in real-time, identify abnormal behaviors, and promptly block potential attacks.
  • Situational Awareness Platform: Leverages full-scenario cybersecurity situational awareness technology to analyze attack sources, types, and targets, enabling rapid identification and blocking of malicious IP addresses.

Horizontal Isolation and Vertical Authentication

  • Horizontal Isolation: Data streams from different functional modules are isolated into separate partitions to prevent attacks from spreading laterally within the system.
  • Vertical Authentication: Encryption authentication devices are deployed at the connection points between production control areas and wide-area networks to ensure the integrity and security of data transmission.

Endpoint Security and Vulnerability Protection

  • Endpoint Protection: Enhances local security defenses for charging station equipment, including hardware encryption modules and software encryption modules, to prevent physical access attacks.
  • Vulnerability Remediation: Regularly updates gateway firmware and security patches to eliminate known vulnerabilities and uses automated tools to detect potential security risks.

▶ 2. Management-Level Security Measures

Account and Permission Management

  • Implements strict account management policies, including strong passwords, dynamic tokens, and two-factor authentication mechanisms to prevent unauthorized access.
  • Assigns hierarchical permissions for gateway and platform management accounts, allowing access only to users with necessary privileges.

Security Audits and Incident Response

  • Conducts regular network security audits and penetration testing to identify and address potential vulnerabilities.
  • Establishes an incident response mechanism to quickly isolate affected areas and restore normal operations in the event of a network attack.

Data Backup and Recovery

  • Regularly backs up critical data and conducts recovery drills to ensure rapid system restoration in cases of ransomware or other destructive attacks.

▶ 3. Implementation of Security Protocols and Industry Standards

  • Complies with the “Technical Specifications for Information Security of Electric Vehicle Charging Facilities and Operation Platforms” (NB/T 11302—2023), fully implementing security requirements for charging facilities, operation platforms, and communication networks.
  • Applies international standards such as OCPP (Open Charge Point Protocol) to strengthen communication management between charging stations and platforms while ensuring compatibility and openness.

▶ 4. Mitigation of Typical Attack Scenarios

  • Fake Base Station Attacks: Uses air interface encryption technologies (e.g., eLTE air interface encryption) to prevent fake base stations from deceiving terminals into connecting.
  • DDoS Attacks: Employs traffic monitoring and blacklist strategies to restrict abnormal traffic sources while enhancing resilience through distributed architectures.
  • Malware Spread: Prevents malicious code from propagating to gateways or charging station devices through endpoint protection, whitelist policies, and automated detection tools.

Through these multi-layered technical methods and management measures, the State Grid Protocol 4G Gateway effectively detects and prevents various network attacks, providing robust security assurance for data transmission and operations on the State Grid eCharging platform.

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