The firewall is developed in recent years to protect a computer network security technology， is currently the most widely used of a network security The firewall is one or a group of access control strategy for the implementation of the system， which can be software， hardware or a combination of hardware and software， its purpose is to provide security protection for the Firewalls often in the internal network and external networks， can monitor， control and changes in internal and external networks of the mobile communication network; control external access to internal computer protected environment， and to determine the time to visit， competence， the types of service And quality， check the spread of internal information， avoid the outflow of confidential information， to resist external invasion and prevent the leakage of internal information This paper presents a firewall configuration in the importance of network security， explain the firewall rule set is a firewall product safety is an important Key words: network security firewall configuration
Hotel Management System is a typical management information system (MIS)， including the development of the main background of the establishment and maintenance of database and application development front-end For the former requirement to establish data consistency and integrity， and data security of a good For applications which require full-featured and easy to use and so Therefore this paper is the application of SQL Server 2000 database and Visual C + + 0 development platform， designed and developed a "hotel management " The system in line with the hotel industry the existing hardware and software environment， and advanced management system development program to achieve the full advantage of existing resources， improve system and application development The system in line with the provisions of hotel management， hotel daily thing to meet the needs of management and operation of the process to achieve an intuitive， convenient， practical， and security The system uses a modular design approach， both for various combinations of system functions and modify， technical maintenance and easy to add staff， maintenance， database maintenance system also has features that demand a timely manner based on industry data， add， delete， modify， backup System results show that， in this paper the design of the hotel management system to meet the customers， hotel staff and senior managers The following are discussed in detail the system's development， design environment and its concrete
At the calculator apply increasingly and extensively with thorough of in the meantime， the safe problem of the calculator network is increasingly complicated with Flimsiness and complexity of network increased the possibility of threat and Increase year by year along with the global safe affairs， the safety which insures a network information system has already caused the concern of people of this world， the information safety all was subjected to an unprecedented value in all Lie this network safety， this text is from the fire wall， attackstone and meet an emergency to respond to， invade an examination， black guest what time carry on a simple
Abstract: Computer Application in the increasingly extensive and in-depth at the same time， computer and network security problems have become increasingly complex and Network vulnerability and complexity of the increased threats and the possibility of With the global security incidents has risen over the years to ensure the safety of network information system has attracted the world's attention， and information security in all countries suffered from the unprecedented This referral network security， the paper from the firewall， attacks and emergency response， intrusion detection， hacker， and so few simple 网络、Network 防火墙（firewall）、黑客 HackerInternet
