When we are testing and diagnosing network lines, in addition to ping, the most commonly used tool is the route tracing tool. On Linux, its command is traceroute, on Windows its command is tracert. Both of them only list the passing IP nodes and the time spent, without describing the IP address, and the readability is very poor.

Fing is a powerful and easy-to-use network security scanning tool for both PC and mobile platforms, claiming to be the #1 Network Scanner with wide acclaim in the world, developed by Overlook from Ireland. It can help you perform a variety of security checks on any WiFi network you can connect to, discover and identify all devices connected to your WiFi, test network speeds, troubleshoot network problems, and more.

Remote control in computing refers to the process that a technician or administrator connects to a computer that needs to be controlled from an offsite location via the Internet, displays its desktop environment to his own computer, and then performs various support and maintenance operations on the remote computer. With the popularity of Internet and technological innovations, remote control technology is increasingly being used in work and life. Remote control software can help us achieve remote assistance, telecommuting, and other purposes.

Cisco Packet Tracer is a full-featured network simulation platform (mainly simulates Cisco routers and switches) with a graphical user interface, developed by Cisco Systems. It is designed to provide a network simulation environment for beginners in Cisco networking courses to design, configure and troubleshoot networks. In other words, it can provide a nearly perfect experimental environment for Cisco network engineers, administrators and Cisco certificate candidates.

Network Notepad is small yet professional program used for easily creating interactive network diagrams on Windows 2000 and higher, developed by Jason Green from United Kingdom. It provides features like tabbed multi-page diagrams, improved graphics, customizable shapes, grouping and locking, rotate objects and text.