Tutorial

What is Android Operating SystemAndroid is a mobile operating system that has been around for nearly 15 years. You’ll primarily find it as the base operating system of phones and tablets around the world. Additionally, there are other oper ...

What is a MAC address?The MAC (Media access control) address is the physical address of the network card on the device (like your PC, smartphone). The MAC address is the ID that your network uses to identify your device's network interface, ...

What is HTTP HTTP protocol is the abbreviation of Hyper Text Transfer Protocol (Hyper Text Transfer Protocol), which is a transfer protocol used to transfer hypertext from a World Wide Web (WWW: World Wide Web) server to a local browser. ...

What is an IP address? An Internet Protocol address (IP address) is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. An IP address serves two main functions: host o ...

1. Basic usage of Wireshark toolThe Wireshark (originally named Ethereal) is a data capturing program and also network packet analysis software. It is used for network troubleshooting, analysis. Wireshark uses WinPCAP as an interface to ex ...

SIP Registration(1) Before any SIP phone users who is try to make a SIP call for the first time, terminal agent A sends a REGISTER request to the proxy server;(2) The proxy server knows that the user information is not in the database throu ...