Netcat, TCP, UDP, Networks, Communication, Utility
Netcat Introduction
Both Linux and Windows versions of Netcat are provided, and it is the most basic utility that can test TCP/UDP communication.
Above all, since the source code is provided, you can consider the basic implementation of TCP/UDP and utilize it in various ways.
⊕ Netcat Download → § https://eternallybored.org/misc/netcat/