The story of a non-network expert

I've heard a lot about how great Docker is, but I wrote this for those who can't get started because the concepts are too difficult. The lecture provides concepts and simple examples that I think are necessary to make good use of Docker.

If you are a developer who deals with HTTP or want to become a developer but did not major in computer science and are weak in networking, gain lifelong knowledge with this one course!

We introduce the basic knowledge of Hack&Hat analysis, a must-have subject to become a security expert.

✅ Among the series of (1) ~ (7), (7) web applications, networks, clouds, WWW, information security ✅ CS101 series lectures - From basic computer theory to the latest practical examples - Provides a wide range of basic knowledge

Let's leverage AWS's key networking services to build everything from simple, basic networks to multi and hybrid networks, understand traffic flow in the architecture, and develop the skills and confidence to implement real cloud networks ourselves.

Understand the basics of security algorithms and certificates, and learn about TLS based on this.

Network packet analysis is essential when conducting incident analysis and vulnerability analysis. Among the tools available, Wireshark is the most widely used, and this course covers the complete utilization of Wireshark and provides understanding through incident analysis case studies.

Creating a simple Gomoku game using Unity and a C# server.

[Reflecting the latest related regulations and guidelines presented by the Korea Financial Security Institute, Financial Supervisory Service, and Personal Information Protection Commission] In the rapidly changing digital financial environment, security has become not an option but a core survival strategy. This course covers the new directions of financial security changing with digital transformation, strategic response methods, and practical approaches to establishing a security culture within organizations. We will examine the policy directions of the Korea Financial Security Institute, the latest regulatory trends, and global security trends together, learning security innovation strategies centered on people and organizations beyond technology-focused approaches.

Learn about networks easily, quickly, and engagingly with pictures and videos!

How does the internet work, and how do browsers fetch web pages? This is a core CS (computer science) lecture that organizes network concepts following the OSI 7-layer flow so you can explain this question yourself. It's structured with diagrams and flow-centered explanations to help you intuitively understand the structure, and connects concepts like the transport layer (TCP/UDP), IP addresses, NAT, and HTTPS that frequently appear in technical interviews to actual questions.

This is a course where you create a mini RPG 2D game to learn 2D development techniques, and then learn the process of converting the completed game into a network game by transitioning it to Netcode for GameObject. It covers various essential tilemap functions for 2D games, and is designed to naturally help you learn clean code writing techniques that adhere to SOLID principles. Additionally, this is a lecture that builds the foundation for network games using the updated Netcode API in the latest Unity 6 version.

This is Part 1 of a roadmap lecture that concisely organizes the essential computer science (CS knowledge) needed to excel in development and data, in a short period. This lecture has also been used as an in-house lecture at top domestic companies for several years. Based on 20 years of experience in actual practice, from system SW to web, app development, and data science, this lecture systematically yet easily organizes the essential core knowledge needed to excel in development and data.

This course covers the core aspects of TCP/IP network programming essential for online game development with a practical focus. You'll learn step by step from the basic principles of sockets to client-server architecture design, and implementation of game frameworks using custom-built network libraries. Topics covered: Basic network concepts and TCP/IP operation principles TCP programming using Socket API Packet protocol design and transmission structure implementation Client/server-based game framework development Optimization and practical tips needed for actual online game development Important notes: The course is conducted on Windows using Visual Studio. While it uses standard BSD socket API, there are slight differences from Unix-based operating systems. IOCP and Overlapped I/O are not covered.

This course is for those who want to develop packet analysis programs like Wireshark and various network solutions using the Npcap library.

Arduino? Coding? You don't need to know anything. Just invest a little bit of your free time and you'll find something amazing.

For beginner Amazon EKS users, this lecture covers the basics of Amazon EKS, an AWS managed Kubernetes service.

This training will help you understand the world-famous cloud, build your own cloud environment, and strengthen your ability to use it easily.

This course proceeds in stages, similar to the actual work, by learning and applying the necessary knowledge while configuring the infrastructure.

For those aiming to pass the "Network Specialist Examination." This course is a learning program that condenses only the key points of the IPA Network Specialist Examination. It focuses on themes directly linked to exam success and is designed to help you acquire knowledge efficiently. Rather than emphasizing volume, we provide carefully selected explanations of "the essential parts you must master to pass"! Let's work together toward passing the Network Specialist exam!

Through this course, students will learn the structure of computers and the overall concepts and flow of networks.