Blue Team – Technical Exchange In the field of information security, the characteristics of network security can be classified according to the OSI reference model, facilitating a systematic approach to analyzing and researching information network security risks. What is the OSI Reference Model? The OSI (Open System Interconnect) model, commonly known as the “OSI Reference … Read more
How to Connect PLC Using WINCC and TCP/IP Prerequisites The prerequisite for establishing communication between the PLC system and WINCC6.0 via Ethernet is that the PLC system is equipped with an Ethernet module or uses a PLC with a PN interface. The list of Ethernet modules is shown in the table below: Note: Only modules … Read more
This article is a highlight from the Kanxue Forum. Author from Kanxue ForumID: Toxic Table of Contents 1. Vulnerability Information 1.1 Brief Description 1.2 Component Overview 1.3 Exploitation 1.4 Impact 1.5 Solutions 2. Vulnerability Reproduction 2.1 Environment Setup 2.2 Reproduction Process 3. Vulnerability Analysis 3.1 Basic Information 3.2 Background Knowledge 3.2.1 Basic Knowledge 3.2.2 Terminology … Read more
Click the blue text above to follow us Resource Sharing Huawei Certification Beginner to Advanced Practical Course ↓ Scan the QR code for video tutorials ↓ In the digital age, the Internet has become an indispensable part of our lives. Within this vast network system, there is a key protocol that plays an important role … Read more
I remember the first time I learned about the global Internet, I wondered what it was really like. When people told me there was a computer network covering almost all of the United States and many places around the world, the first image that came to my mind was a thick cable running along telephone … Read more
We often hear the term IP, but what is IP? IP stands for “Internet Protocol”, which is the protocol for interconnecting networks, abbreviated as IP. After understanding IP, let’s talk about what an IP address is. First, let me ask everyone a question: there are tens of millions to over a billion hosts connected to … Read more
Click the blue text above to follow us Resource Sharing Huawei Certification Beginner to Advanced Practical Course ↓ Scan the QR code for practical video lessons ↓ 1. Essential Conditions for Network Troubleshooting Why do we need to discuss essential conditions first? Because the network troubleshooting discussed here is not just about using a small … Read more
Search on WeChat Technical Training Introduction Today, let’s talk about Modbus. First, let’s look at the main content for today: 01 Terminology Interpretation 02 Background 03 Protocol Principles 04 Transmission Methods 05 Differences Between Modbus RTU and Modbus ASCII 06 Modbus TCP and Its Considerations 07 Function Code Functions 08 Modbus Protocol Security Analysis 01 … Read more
9 Common Network Commands, Very Practical! 1. ping Command PING (Packet Internet Groper), the Internet packet explorer, is a program used to test network connectivity. Ping operates in the TCP/IP network architecture at the application layer, primarily sending ICMP (Internet Control Message Protocol) Echo request messages to a specific destination host to test whether the … Read more
Author Introduction: Zhang Haiqing, Qingdao Chengyang District Vocational Secondary School, Level 1 Teacher, Master’s Degree, Research Direction in Information Technology Teaching Design (266108). Paper Published In: China Educational Technology Equipment, 2018,05 1 Introduction With the increasing application of new technologies such as cloud computing, big data, the Internet of Things, and mobile computing, the revolutionary … Read more