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
Cybersecurity is a dynamic process, mainly reflected in the following two aspects: The methods of attackers are constantly changing, and attack methods and tools are continuously updated. With the increasing number of devices on the network, various vulnerabilities continue to emerge, providing new breeding grounds for attackers. Network business is constantly changing; software systems are … Read more
Xiang’an Sun, Hongyi Zhu (Shanghai Broadband Technology and Application Engineering Research Center, Shanghai 200436) Abstract: Smart home devices are making home networks increasingly complex. This article starts from two aspects: the types of smart home network devices and their traffic characteristics. It selects some representative and easy-to-operate real terminal devices, builds a home network simulation … Read more
1、CANopen‘s Predefined MessageID Classification: At the inception of CANopen, even in the automotive electronics industry where CAN bus is most widely used, the number of CAN nodes in the network and the amount of information needing communication were relatively low. People adopted CAN to replace RS485, primarily valuing its real-time advantage of burst transmission, while … Read more
OD (Object Dictionary): This is an ordered, predefined group of objects that can be accessed via the network, with each object addressed by a 16-bit index and an 8-bit sub-index. The range of a node’s object dictionary is from 0X1000 to 0X9FFF. COB-ID (Communication Object Identifier): This is the message frame ID of the CANopen … Read more
With the popularity of smart devices, people have become accustomed to accessing Wi-Fi networks anytime and anywhere. What are the differences between wireless Wi-Fi networks for mobile devices? Let’s explore them one by one. Difference 1: Home Wi-Fi Routers VS Enterprise Commercial APs Home Wi-Fi routers range from dozens to hundreds of yuan, while commercial … Read more
Follow me, a still dreaming programmer, sharing high-quality programming blogs every day. follow us for dream Reply “Voucher” to get Tencent Cloud and Alibaba Cloud vouchers for free What is NAS? NAS literally means Network Attached Storage, but we are now more accustomed to considering NAS as a family or private network resource center. To … Read more