Course Intermediate  3555

Course Introduction：A firewall is a system used to control access to a computer network. Firewalls can isolate risk areas from safe access areas and prevent unpredictable or unauthorized external access from invading the internal network. Learning firewalls under Linux is not only for these reasons. The most important thing is that during the learning stage, through the use of firewalls, you can better master the principles of network communication, become familiar with the operation of Linux, and master network services and network protocols. It is also important for learning Linux operation and maintenance or Cybersecurity is helpful. There are many firewalls under Linux, including iptables, firewalld, selinux, tcp_warppers, etc. This course summarizes these firewall-related technologies.

Course Advanced  10672

Course Introduction：The course content covers common PHP security vulnerabilities in web development, vulnerabilities in common PHP functions, and PHP file system security. At the same time, the security issues of server software are introduced.

Course Advanced  43194

Course Introduction："High-Performance Linux Server Building Video Tutorial" introduces the installation and configuration of the system, the introduction of the editor, the operation of files, the establishment of the lnmp environment and the installation and use of Redis.

Course Intermediate  4396

Course Introduction：A new tutorial on Linux operation and maintenance, starting from 0, with detailed explanations throughout, the latest content, without any advertisements and nonsense. If I was a novice in operation and maintenance, if someone had explained it to me in such detail, I wouldn't have wasted 3 years!

Course Elementary  22850

Course Introduction：Python zero-based introductory basic class + advanced project practical tutorials, a full set of python tutorials, basically covering all knowledge, combining theory with practice to help you successfully advance to senior Python development engineer.

Course Elementary  3266

Course Introduction：Operation and maintenance is not tiring, just a little tiring! Linux operation and maintenance website architecture, learn how to survive as an operation and maintenance engineer, corporate website, server deployment, whole network monitoring and other knowledge points are all here; this course is reprinted from Bilibili: https://www.bilibili.com/video /BV16c411T7z4

Course Elementary  4510

Course Introduction：The second phase of Web front-end zero foundation is here! The Web front-end course is serialized in stages and has a lot of content. You can learn it step by step; Don't just watch the video, follow the teacher and practice more~

Course Intermediate  11394

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17705

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11399

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Intermediate  27108

Course Introduction：RBAC is one of the most common rights management technologies in commercial systems. RBAC is an idea that can be implemented in any programming language. Its mature and simple control idea is increasingly popular among developers. "ThinkPHP (RBAC) Rights Management Video Tutorial" will introduce the basic knowledge, principles and complete implementation process of RBAC in detail through the theoretical part and practical part, and demonstrate the application scenarios of RBAC.