In a perfect security system, () prevention means is the basis of the prevention system. ABC network access control is preferred. Thank you for your attention!
What is the security system of security technology? Security technology prevention is a security service guarantee system with detection, delay and orderly response, which is oriented by security technology, based on manpower prevention, and by means of technical prevention and entity prevention. It is a public security undertaking and social public enterprise aimed at preventing losses and crimes. There are two different understandings of security technology prevention. For police law enforcement departments, security technology prevention is a public security business that uses security technology to carry out security prevention work; For social and economic departments, security technology prevention is an industry that provides a kind of security service for the public by using security technology. Since it is an industry, there must be product research and development, system design, engineering construction, service and management.
What are the broad definitions of security system? Technical prevention system, including video surveillance, infrared alarm, visual access control, intelligent parking brake, etc. Physical defense system, including anti-theft umbrella, anti-climbing, fence, unit door, fence, etc. Civil air defense system, including security, guards, property, group defense, guard system, etc. ; Fire fighting system, including fire extinguisher, automatic sprinkler system, floor fire water gun and smoke automatic alarm system. At least so much.
What systems are included in the "5t" of vehicle safety prevention in China? Railway vehicle safety early warning system-5t system;
One is THDS, which is an intelligent tracking system for infrared axle temperature detection. Using the principle of thermal radiation, it focuses on detecting the thermal temperature running through vehicle bearings, tracking and alarming hot axle vehicles, and focusing on preventing hot axle accidents. There are 34 infrared detection stations and 63 infrared axle temperature matching car number intelligent tracking systems on Daqin Line. The distance between stations is basically controlled within 30 kilometers, and one machine and two probes detect the bearing temperature.
The second is TFDS, which is the image detection system for the faulty rail side of freight cars. It uses the principle of high-speed camera to capture the key parts such as vehicle accessories in real time, and uses computer network technology to send them to the machine inspection room before the train enters the station, and the dynamic car inspectors will carry out dynamic inspection. Inform the on-site vehicle inspection personnel to properly handle the analyzed safety hazards.
The third is TPDS, that is, the dynamic monitoring system of freight car quality. Using the track test platform, the vehicle safety index is dynamically detected. It is mainly to monitor the safety hazards such as wheel tread damage, cargo overload and unbalanced load, and realize mutual control of freight car safety and quality.
The fourth is TADS, that is, the rail side acoustic diagnosis system of freight car rolling bearing fault. This paper mainly uses acoustic technology and computer technology to analyze the execution noise of freight car rolling bearings, so as to move the safety protection gate forward and find the early failure of the bearings as soon as possible.
Fifthly, TCDS system is the only bus safety monitoring system in China. TCDS mainly uses vehicle network and data acquisition technology to monitor the technical and safety status of vehicle components, predict fault information and ensure the safety of railway transportation.
What are the design principles of network security protection system? According to the security requirements to prevent security attacks, the security objectives to be achieved, the security services required by the corresponding security mechanisms and other factors, referring to international standards such as SSE-CMM ("System Security Engineering Capability Maturity Model") and ISO 17799 (Information Security Management Standard), the aspects of enforceability, manageability, expansibility, comprehensive completeness and system balance are comprehensively considered. The network security system should follow the following nine principles in the overall design process: 1. Cannikin Law of network information security refers to the balanced and comprehensive protection of information. The maximum volume of a barrel depends on the shortest piece of wood. The network information system is a complex computer system, and its own physical, operational and management loopholes constitute the security vulnerability of the system, especially the complexity of the multi-user network system itself and the enjoyment of resources make it impossible to prevent simple technical protection. The "most permeable principle" used by attackers is bound to attack in the weakest part of the system. Therefore, a full, comprehensive and complete analysis, evaluation and detection (including simulated attacks) of the security vulnerabilities and threats of the system is a necessary prerequisite for designing an information security system. The primary purpose of security mechanism and security service design is to prevent the most commonly used attack means, and the fundamental purpose is to improve the security efficiency of the "lowest security point" of the whole system. 2. The integrity principle of network information security requires that when the network is attacked or destroyed, the service of the network information center must be restored as soon as possible to reduce losses. Therefore, the information security system should include security protection mechanism, security detection mechanism and security recovery mechanism. The security protection mechanism is to take corresponding protection measures according to various security threats existing in a specific system to avoid illegal attacks. The security detection mechanism is to detect the implementation of the system, and to find and stop all kinds of attacks on the system in time. The security recovery mechanism is to deal with emergencies and recover information as soon as possible when the security protection mechanism fails, so as to reduce the loss of supply. 3. The principle of security assessment and balance For any network, absolute security is difficult to achieve, and it is not necessarily necessary, so it is necessary to establish a reasonable and practical security and user demand assessment and balance system. The design of security system should correctly handle the relationship between demand, risk and cost, make security and availability compatible, and make it organizationally executable. There are no absolute standards and indicators to evaluate the security of information, which can only be determined according to the needs of users and the specific application environment of the system, depending on the scale and scope of the system, the nature of the system and the importance of information. 4. Standardization and consistency principle system is a huge system engineering, and the design of its security system must follow a series of standards, so as to ensure the consistency of each subsystem, make the whole system interconnected and share information safely. 5. The principle of combining technology with management The safety system is a complex system engineering, involving people, technology, operation and other elements, and it cannot be realized simply by relying on technology or management. Therefore, it is necessary to combine various safety technologies with the implementation of management mechanism, personnel ideological education and technical training, and the construction of safety rules and regulations. 6. The principle of overall planning and step-by-step implementation Due to the uncertainty of policy provisions and service requirements, changes in environment, conditions and time, and progress in attack means, it is impossible to achieve safety protection in one step. Under a comprehensive security plan, according to the actual needs of the network, a basic security system can be established first to ensure basic and necessary security. With the expansion of network scale and application, as well as the changes of network application and complexity in the future, the vulnerability of the network will continue to increase. Adjust or strengthen security protection to ensure the most fundamental security requirements of the whole network. 7. The hierarchical principle refers to the security level and security level. A good information security system must be divided into different levels, including information confidentiality, user operation authority, network security (security subnet and security area) and system implementation structure (application layer, network layer, link layer, etc.). ), so as to provide a comprehensive and optional security algorithm and security system for different levels of security objects and meet various practical needs of different levels in the network. 8. The principle of dynamic development should constantly adjust security measures according to changes in network security to adapt to the new network environment and meet new network security requirements. 9. Operational principle First of all, safety measures need to be completed manually. If the measures are too complicated and the requirements for people are too high, the security itself will be reduced. Secondly, taking measures cannot affect the normal implementation of the system.
What are five kinds of computer security precautions? Network access control, database backup and recovery, information encryption technology, anti-virus technology, develop and improve a high-security operating system.
How many layers does Oracle llg's security system include? Start-execute-service. Master of Science-
Services found: oracleoradb10g _ home1tns listener and OracleServiceORCL (note the ORCL service name).
These two services are necessary for oracle to start (automatically by default), and starting these two services is equivalent to opening oracle.
Financial security does not include D. According to the definition of security, there are three means of security, namely civil air defense (civil air defense), physical defense (physical defense or physical defense) and technical defense (technical defense).