CN117134991A - Safety encryption protection system for traffic information release system - Google Patents

Abstract

The invention discloses a safety encryption protection system for a traffic information release system, which comprises: IPsec module: UDP encapsulation is used in IPsec to allow IPsec traffic to pass through NAT devices; IPsec endpoint configuration module: configuring an IPsec endpoint to use UDP encapsulation; NAT equipment configuration module: configuring NAT equipment to support UDP encapsulated IPsec traffic; NAT traversing setting module: enabling NAT traversal protocol to ensure IPsec traffic can traverse NAT equipment, and enabling the IPsec traffic to process and bypass the limitation of the NAT equipment; a security policy configuration module: configuring security policies, including authentication and key exchange, ensuring that communications between IPsec endpoints are protected and that only authorized users can establish secure connections; test and monitor module: before the actual deployment, tests are performed to ensure that IPsec configuration and NAT device settings work properly. The invention provides higher security and availability for the traffic information release system by solving the NAT traversal problem.

Description

A security encryption protection system for traffic information release system

Technical field

The invention relates to the technical field of transportation networks, and in particular to a security encryption protection system for a traffic information release system.

Background technique

Traffic information release systems usually require the use of security encryption measures to ensure the confidentiality, integrity and availability of information. This is because traffic information may contain sensitive data, such as video streams from traffic surveillance cameras, traffic light status, traffic incident reports, which may be subject to security risks if it is not encrypted during transmission or storage. In the existing technology, IPsec (Internet Protocol Security) is used to encrypt communication links in the traffic information release system. IPsec is a widely used protocol suite used to protect the confidentiality and integrity of network communications. It can be used to securely encrypt and authenticate the transmission of data packets in the network, but IPsec's Network Address Translation (NAT) may cause There is a problem with IPsec traffic because IPsec authentication and encryption usually involve IP addresses and ports, and NAT changes the source and destination addresses of packets.

Contents of the invention

In order to solve the above problems, the present invention provides a security encryption protection system for a traffic information release system.

In order to achieve the above objects, the technical solutions adopted by the present invention are as follows:

A security encryption protection system for traffic information release systems, including:

IPsec module: Use UDP encapsulation in IPsec to allow IPsec traffic to pass through NAT devices;

IPsec endpoint configuration module: Configure IPsec endpoints to use UDP encapsulation;

NAT device configuration module: Configure the NAT device to support UDP-encapsulated IPsec traffic;

NAT traversal setting module: Enable NAT traversal protocol to ensure that IPsec traffic can traverse NAT devices. NAT traversal protocol enables IPsec traffic to process and bypass the restrictions of NAT devices;

Security policy configuration module: Configure security policies, including authentication and key exchange, to ensure that communications between IPsec endpoints are protected and only authorized users can establish secure connections;

Testing and Monitoring Module: Before actual deployment, perform testing to ensure that the IPsec configuration and NAT device settings are working properly.

Further: the IPsec module includes:

Make sure the selected IPsec implementation supports NAT traversal;

In the IPsec configuration, select the ESP protocol using UDP encapsulation and set the following parameters:

ESP encapsulation mode: select UDP encapsulation;

UDP port number: Specify the UDP port number used to encapsulate IPsec traffic;

Configure other IPsec parameters: In addition to UDP encapsulation, other IPsec parameters need to be configured to ensure the confidentiality and integrity of communication;

Define and manage IPsec security associations: configure IPsec security associations and define security parameters for communication;

Configure IPsec endpoints: Configure IPsec on both endpoints of the traffic information publishing system, ensuring that they use the same IPsec configuration and parameters.

Further: the IPsec endpoint configuration module includes:

In the IPsec configuration, set the ESP encapsulation mode to use UDP encapsulation;

Specify the UDP port number for encapsulating IPsec traffic;

Make sure to configure the ESP packet size to an appropriate value to accommodate the maximum MTU size in the network.

Further: the NAT device configuration module includes:

Log in to the NAT device management interface and find the NAT rule configuration section;

In the NAT rule, configure UDP port mapping to map the UDP port number to the correct internal IPsec endpoint, ensuring that the UDP port number matches the configuration of the IPsec endpoint so that UDP-encapsulated IPsec traffic can be correctly routed to the destination;

Ensure that NAT devices do not change IPsec header information, including source and destination IP addresses;

Enabling UDP traversal ensures that the NAT device can correctly handle UDP-encapsulated IPsec traffic;

After completing the configuration, perform tests to ensure that UDP-encapsulated IPsec traffic can pass through the NAT device and verify that the IPsec connection can be established and transmit data normally.

Further: the NAT traversal setting module includes:

Enable NAT traversal;

Configure NAT traversal parameters to adapt to the network environment;

After completing the NAT traversal settings, perform a test to verify whether IPsec traffic can successfully traverse the NAT device and ensure that the IPsec connection can be established and data can be transmitted normally.

Further: the security policy configuration module includes:

In the IPsec configuration, select an appropriate authentication method to ensure that legitimate users can establish connections;

Configure IKE parameters, including parameters in the key negotiation phase, which are used for the establishment of security associations and key negotiation;

Create one or more security association configurations that define secure communication parameters with peers;

Assign security associations to IPsec endpoints to ensure that they share the same security policy and that configured parameters are consistent with those of the peer in order to establish and maintain secure connections;

When two IPsec endpoints attempt to establish a connection, key negotiation of the IKE protocol is performed to generate keys used to encrypt and authenticate data;

Regularly monitor the performance and activity of secure connections to ensure they remain protected.

Further: the testing and monitoring modules include:

Before actual deployment, perform preliminary testing, including the following:

Establish IPsec connection: Ensure that the IPsec connection can be successfully established and data can be transferred between the two endpoints;

NAT traversal test: Verify that NAT traversal is working properly and IPsec traffic can pass through the NAT device;

Security policy testing: Ensure that the security policy is configured correctly and only legitimate users can establish connections;

Data transmission testing: transmit data and verify data integrity and confidentiality;

Conduct performance testing to evaluate the performance of IPsec connections, measuring the bandwidth, latency and throughput of the connection;

Configure system monitoring to track connection activity and performance;

Regularly check the performance and security status of the system, monitor the stability and performance of connections, and review security audit logs to detect potential security issues;

During system operation, update and maintain configurations and parameters based on monitoring results to ensure that security policies, keys and certificates are still valid and comply with best security practices;

Set up an incident response plan to handle security incidents and issues and take appropriate action when anomalies or security incidents are detected.

Compared with the existing technology, the technical progress achieved by this invention is:

The present invention solves the problem of NAT traversal. By correctly configuring IPsec, UDP encapsulation, NAT equipment, and enabling the NAT traversal protocol, it ensures that IPsec traffic can safely traverse the NAT equipment without being affected by NAT, because many traffic information release systems need to cross different Networks and devices, including NAT devices.

The use of IPsec ensures the confidentiality and integrity of traffic information, encryption protects the privacy of data, while authentication and integrity checks ensure that the data has not been tampered with during transmission, which is very important for the security of traffic information to prevent falsehoods Information or data leakage.

The present invention allows the secure transmission of traffic information between different cities or regions, which is crucial for cross-regional traffic information release systems because it can provide real-time data across different geographical locations. By configuring IPsec, you can implement strong authentication and key management mechanisms to ensure that only authorized users and devices can establish connections, helping to prevent unauthorized access.

The invention can be configured and customized according to specific system and network requirements, and this configurability makes it suitable for traffic information release systems of various sizes and types. By monitoring the performance and security of the system in real time, potential problems can be detected in time and appropriate measures can be taken, helping to maintain the availability and security of the system.

In summary, the present invention provides better solutions for the traffic information release system by solving the NAT traversal problem, providing data confidentiality and integrity, supporting cross-regional communication, implementing powerful identity verification and key management, and having monitoring and event response functions. Advanced security and usability. It helps ensure the accuracy and reliability of traffic information while protecting sensitive data from unauthorized access.

Description of the drawings

The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

In the attached picture:

Figure 1 is a system structure diagram of the present invention.

Detailed ways

The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in Figure 1, the present invention discloses a security encryption protection system for traffic information release systems, including:

IPsec module:

Select an IPsec configuration that supports NAT traversal, where UDP encapsulation is used in IPsec to allow IPsec traffic to pass through the NAT device. :

IPsec endpoint configuration module

Configure the IPsec endpoint to use UDP encapsulation. Specifically, configuring IPsec to use the UDP-encapsulated ESP (EncapsulatingSecurityPayload) protocol allows IPsec traffic to be encapsulated in UDP packets. This typically involves configuring the following parameters:

ESP encapsulation mode: use UDP encapsulation

UDP port number: Specify the UDP port number used to encapsulate IPsec traffic

ESP packet size: determine the maximum size of each ESP packet

NAT device configuration module:

Configure the NAT device to support UDP-encapsulated IPsec traffic. Ensure that the NAT device does not change IPsec header information, including source and destination IP addresses, and UDP port numbers. Specific NAT rules and configuration will depend on the model and manufacturer of the NAT device.

NAT traversal setting module:

Enable NAT traversal protocols, such as NAT-T, to ensure that IPsec traffic can traverse the NAT device. The NAT traversal protocol enables IPsec traffic to be processed correctly and bypass the restrictions of NAT devices.

Security policy configuration module:

Configure appropriate security policies, including authentication and key exchange. Ensure communications between IPsec endpoints are protected and only authorized users can establish secure connections.

Testing and monitoring modules:

Before actual deployment, conduct testing to ensure that the IPsec configuration and NAT device settings are working properly. Monitor systems regularly to ensure security and performance.

The key to the present invention is to correctly configure IPsec and NAT equipment to support UDP encapsulation to solve the NAT traversal problem while ensuring communication security. This ensures that the traffic information release system can transmit data safely and reliably when facing NAT devices.

Specifically, IPsec modules include:

Choose an IPsec implementation that supports NAT traversal: Make sure the IPsec implementation you choose (usually an IPsecVPN device or software) supports NAT traversal. Different IPsec implementations may have different configuration options and support levels.

Configure IPsec protocol parameters: In the IPsec configuration, select the ESP (EncapsulatingSecurityPayload) protocol using UDP encapsulation, which involves setting the following parameters:

ESP encapsulation mode: select UDP encapsulation.

UDP port number: Specify the UDP port number used to encapsulate IPsec traffic. Usually, common UDP port numbers are 500 or 4500, but make sure it is consistent with the configuration of the NAT device.

Configure other IPsec parameters: In addition to UDP encapsulation, you also need to configure other IPsec parameters, such as encryption algorithm, authentication method, key length, etc., to ensure the confidentiality and integrity of communication.

Define and manage IPsec security associations: Configure IPsec security associations and define security parameters for communication, such as pre-shared keys or digital certificates, which will be used to securely establish IPsec connections.

Configure IPsec endpoints: Configure IPsec on both endpoints of the traffic information publishing system, ensuring that they use the same IPsec configuration and parameters.

The goal of this module is to ensure that the IPsec configuration is suitable for NAT traversal so that IPsec traffic can safely pass through the NAT device.

Specifically, the IPsec endpoint configuration module includes:

ESP encapsulation mode: In the IPsec configuration, set the ESP encapsulation mode to use UDP encapsulation. This is done as part of the configuration of the IPsec policy, and with most IPsec devices and software, you will find an option in the configuration to specify the encapsulation mode.

UDP port number: Specify the UDP port number used to encapsulate IPsec traffic. Typically, the UDP port number is 4500 (UDP-4500), which is the standard port number required for NAT traversal. If you need to use different port numbers, make sure the configuration on both IPsec endpoints is consistent, this can be specified in the IPsec configuration.

ESP message size: ESP message size is the maximum size of each ESP message. Ensure that the ESP packet size is configured to an appropriate value to accommodate the maximum MTU (Maximum Transmission Unit) size in the network. Typically, the maximum MTU size is 1500 bytes, but in some cases a smaller size may be required to avoid fragmentation.

The goal of this module is to ensure that IPsec endpoints are configured to accommodate NAT traversal to allow IPsec traffic to be correctly encapsulated in UDP packets.

Specifically, the NAT device configuration module includes:

NAT rule configuration: Log in to the NAT device management interface and find the NAT rule configuration section. Typically, a NAT rule needs to be created to ensure that UDP-encapsulated IPsec traffic correctly passes through the NAT device.

UDP port mapping: In the NAT rule, configure UDP port mapping to map the UDP port number to the correct internal IPsec endpoint. Ensure that the UDP port number matches the configuration of the IPsec endpoint so that UDP-encapsulated IPsec traffic is routed correctly to the destination.

No changes to IPsec headers: The key is to ensure that the NAT device does not change the IPsec header information, including source and destination IP addresses. This is usually the default behavior, but you should verify that the configuration of the NAT device does not cause this information to change.

Enable UDP passthrough: Some NAT devices may need to enable the UDP passthrough (UDPPassthrough) or NAT-T (NATTraversal) function, which ensures that the NAT device can correctly handle UDP-encapsulated IPsec traffic.

Test and verify: After completing the configuration, perform tests to ensure that UDP-encapsulated IPsec traffic can pass through the NAT device without causing problems. Verify that the IPsec connection can be established and transfer data normally.

The goal of this module is to ensure that NAT devices do not cause problems during the transmission of IPsec traffic.

Specifically, the NAT traversal setting module includes:

Check NAT device support: First, determine whether the NAT device supports NAT traversal protocol, such as NAT-T. Supported protocols may vary between devices and manufacturers, check the documentation for your NAT device to determine whether NAT traversal is supported and to learn how to enable it.

Enable NAT traversal: If your NAT device supports NAT traversal, go to the management interface of the NAT device and enable the NAT traversal option. This is usually a switch or option in the NAT or firewall settings. When NAT traversal is enabled, the NAT device will be able to handle IPsec traffic correctly.

Configure NAT traversal parameters: In some cases, you may need to configure NAT traversal parameters to adapt to the network environment. This may include setting the NAT-T timeout value or other related parameters to ensure that NAT traversal works properly.

Verification: After completing the NAT traversal settings, perform a test to verify whether IPsec traffic can successfully traverse the NAT device to ensure that the IPsec connection can be established and data can be transmitted normally.

The goal of this module is to ensure that the NAT traversal protocol works correctly so that IPsec traffic can traverse the NAT device and be transmitted normally.

Specifically, the security policy configuration module includes:

Select an authentication method: In the IPsec configuration, select an appropriate authentication method to ensure that legitimate users can establish connections. Authentication methods may include pre-shared keys, digital certificates, or other authentication methods. Make sure the method you choose is appropriate for your security needs.

Configure IKE parameters: Configure IKE parameters, including parameters of the key negotiation phase (usually there are two phases: Phase1 and Phase2), such as encryption algorithm, hash algorithm, Diffie-Hellman group, key life cycle, etc. These parameters will be used for security association establishment and key negotiation.

Define security associations: Create one or more Security Association (SA) configurations to define secure communication parameters with peers. Each SA will include IPsec-related parameters, such as encryption algorithm, authentication algorithm, key, etc.

Assign security policy: Assign security associations to IPsec endpoints to ensure they share the same security policy. Ensure that the configured parameters are consistent with the peer's configuration in order to establish and maintain a secure connection.

Key Agreement: When two IPsec endpoints attempt to establish a connection, they perform key negotiation of the IKE protocol to generate keys used to encrypt and authenticate data. Ensure that key negotiation can complete successfully.

Monitoring and auditing: Regularly monitor the performance and activity of secure connections to ensure they remain protected. Additionally, configure audit logs to record critical security events.

The goal of this module is to ensure that communications between IPsec endpoints are protected and only legitimate users can establish connections. The configuration of security policies needs to consider aspects such as encryption, authentication, and key management to maintain the confidentiality and integrity of communications.

Specifically, the testing and monitoring modules include:

Preliminary testing: Before actual deployment, perform preliminary testing, including the following aspects:

Establish IPsec connection: Ensure that the IPsec connection can be successfully established and data can be transferred between the two endpoints.

NAT traversal test: Verify that NAT traversal is working properly and IPsec traffic can pass through the NAT device.

Security policy test: Ensure that the security policy is configured correctly and only legitimate users can establish connections.

Data transfer testing: Transfer data and verify data integrity and confidentiality.

Performance Testing: Conduct performance testing to evaluate the performance of IPsec connections. Measure the bandwidth, latency, and throughput of your connections to ensure they meet your needs.

Monitoring settings: Configure system monitoring to track connection activity and performance. This may include configuring monitoring tools or system logs to record key events and statistics.

Regular monitoring: Regularly check the performance and security status of the system. Monitor connection stability and performance, and review security audit logs to detect potential security issues.

Update and maintenance: During system operation, necessary updates and maintenance are performed on configurations and parameters based on monitoring results. Ensure security policies, keys, and certificates are still valid and comply with best security practices.

Incident Response: Set up an incident response plan to handle security incidents and issues. When an anomaly or security incident is detected, take appropriate action immediately.

The goal of this module is to ensure that the system works properly in actual operation, security is maintained, and performance meets requirements. Testing and monitoring are ongoing processes to ensure system security and performance.

Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be replaced. Any modifications, substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of the claims of the present invention.

Claims (7)

1. A security encryption protection system for traffic information release system, which is characterized by including: IPsec module: Use UDP encapsulation in IPsec to allow IPsec traffic to pass through NAT devices; IPsec endpoint configuration module: Configure IPsec endpoints to use UDP encapsulation; NAT device configuration module: Configure the NAT device to support UDP-encapsulated IPsec traffic; NAT traversal setting module: Enable NAT traversal protocol to ensure that IPsec traffic can traverse NAT devices. NAT traversal protocol enables IPsec traffic to process and bypass the restrictions of NAT devices; Security policy configuration module: Configure security policies, including authentication and key exchange, to ensure that communications between IPsec endpoints are protected and only authorized users can establish secure connections; Testing and Monitoring Module: Before actual deployment, perform testing to ensure that the IPsec configuration and NAT device settings are working properly. 2. A security encryption protection system for traffic information release system according to claim 1, characterized in that the IPsec module includes: Make sure the selected IPsec implementation supports NAT traversal; In the IPsec configuration, select the ESP protocol using UDP encapsulation and set the following parameters: ESP encapsulation mode: select UDP encapsulation; UDP port number: Specify the UDP port number used to encapsulate IPsec traffic; Configure other IPsec parameters: In addition to UDP encapsulation, other IPsec parameters need to be configured to ensure the confidentiality and integrity of communication; Define and manage IPsec security associations: configure IPsec security associations and define security parameters for communication; Configure IPsec endpoints: Configure IPsec on both endpoints of the traffic information publishing system, ensuring that they use the same IPsec configuration and parameters. 3. A security encryption protection system for traffic information release system according to claim 2, characterized in that the IPsec endpoint configuration module includes: In the IPsec configuration, set the ESP encapsulation mode to use UDP encapsulation; Specify the UDP port number for encapsulating IPsec traffic; Make sure to configure the ESP packet size to an appropriate value to accommodate the maximum MTU size in the network. 4. A security encryption protection system for traffic information release system according to claim 3, characterized in that the NAT device configuration module includes: Log in to the NAT device management interface and find the NAT rule configuration section; In the NAT rule, configure UDP port mapping to map the UDP port number to the correct internal IPsec endpoint, ensuring that the UDP port number matches the configuration of the IPsec endpoint so that UDP-encapsulated IPsec traffic can be correctly routed to the destination; Ensure that NAT devices do not change IPsec header information, including source and destination IP addresses; Enabling UDP traversal ensures that the NAT device can correctly handle UDP-encapsulated IPsec traffic; After completing the configuration, perform tests to ensure that UDP-encapsulated IPsec traffic can pass through the NAT device and verify that the IPsec connection can be established and transmit data normally. 5. A security encryption protection system for traffic information release system according to claim 4, characterized in that the NAT traversal setting module includes: Enable NAT traversal; Configure NAT traversal parameters to adapt to the network environment; After completing the NAT traversal settings, perform a test to verify whether IPsec traffic can successfully traverse the NAT device and ensure that the IPsec connection can be established and data can be transmitted normally. 6. A security encryption protection system for traffic information release system according to claim 5, characterized in that the security policy configuration module includes: In the IPsec configuration, select an appropriate authentication method to ensure that legitimate users can establish connections; Configure IKE parameters, including parameters in the key negotiation phase, which are used for the establishment of security associations and key negotiation; Create one or more security association configurations that define secure communication parameters with peers; Assign security associations to IPsec endpoints to ensure that they share the same security policy and that configured parameters are consistent with those of the peer in order to establish and maintain secure connections; When two IPsec endpoints attempt to establish a connection, key negotiation of the IKE protocol is performed to generate keys used to encrypt and authenticate data; Regularly monitor the performance and activity of secure connections to ensure they remain protected. 7. A security encryption protection system for traffic information release system according to claim 6, characterized in that the testing and monitoring module includes: Before actual deployment, perform preliminary testing, including the following: Establish IPsec connection: Ensure that the IPsec connection can be successfully established and data can be transferred between the two endpoints; NAT traversal test: Verify that NAT traversal is working properly and IPsec traffic can pass through the NAT device; Security policy testing: Ensure that the security policy is configured correctly and only legitimate users can establish connections; Data transmission testing: transmit data and verify data integrity and confidentiality; Conduct performance testing to evaluate the performance of IPsec connections, measuring the bandwidth, latency and throughput of the connection; Configure system monitoring to track connection activity and performance; Regularly check the performance and security status of the system, monitor the stability and performance of connections, and review security audit logs to detect potential security issues; During system operation, update and maintain configurations and parameters based on monitoring results to ensure that security policies, keys and certificates are still valid and comply with best security practices; Set up an incident response plan to handle security incidents and issues and take appropriate action when anomalies or security incidents are detected.