How to Set Up an IP Address Press the “WIN” key + “R” key on your keyboard (WIN key: the key circled in the above image) Type “ncpa.cpl” (without quotes), and press Enter Right-click on “Local Area Connection” or “Ethernet”, and select “Properties”. Scroll down until you find “Internet Protocol Version 4 (TCP/IPv4)” in the … Read more
IP address conflicts typically occur within a local area network (LAN). In a LAN, multiple computers are present, each assigned a unique IP address. If one computer’s IP address is modified and coincides with another computer’s IP address within the same LAN, an IP conflict will occur. 【Fault Case】: In a certain LAN, the router … 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
In computer networks, to share resources and exchange data in an orderly manner, some pre-agreed rules must be followed. These standards or agreements established for data exchange in the network are called network protocols, abbreviated as protocols. To enable efficient transmission between computers, a layered approach is adopted, similar to how people collaborate to complete … Read more
1. Phenomenon Description: The user cannot connect to the network, and the local connection icon in the system tray shows an exclamation mark indicating that the IP is restricted. 2. Cause Analysis 1. Many users do not understand TCP/IP and do not know how to set parameters such as “IP address”, “subnet mask”, and “default … Read more
If you work in communication or IT, you cannot avoid networks, and the most important protocol in networking is TCP. Whether in practical work or in written exams and interviews, where can you go without TCP? I have read the documents related to TCP in the RFC, and also looked at the source code related … Read more
Key Knowledge Points in Chapter One: Understand the characteristics, classifications, development, and applications of embedded systems, and familiarize yourself with the logical components of embedded systems. Understand the main types of embedded processing chips, be familiar with the SoC development process, and understand the significance of IP cores. Be familiar with the encoding of Chinese … Read more
Limit bandwidth for specific IP addresses in OpenWrt 1. Script for limiting bandwidth Use a custom script to limit the bandwidth for specific IP addresses or address ranges for connected devices. # !/bin/sh # Define incoming and outgoing interfaces (IDEV for internal network interface, ODEV for external network interface) IDEV=”tunAcc” ODEV=”br-wan” # Define total upstream … Read more
What is OpenWrt? OpenWrt is commonly found in third-party firmware for wireless routers (soft routers). It is an efficient, reliable, and feature-rich router firmware. OpenWrt can be described as an embedded Linux distribution. (The mainstream router firmware includes dd-wrt, tomato, openwrt, and padavan.) Compared to a single, static system, OpenWrt’s package management provides a fully … Read more