TCP/IP

Lesson in the Linux Roadmap · Stage 13: Networking

Last updated 14 September 2026

What is TCP/IP?

TCP/IP (Transmission Control Protocol/Internet Protocol) forms the backbone of internet communication, allowing computers to connect and transfer data. It comprises four layers: Network Interface, Internet, Transport, and Application. Essential for Linux networking, enabling hosts to interact across networks. Use netstat -at to view active TCP/IP connections. Crucial for network management and troubleshooting.

Study this in the interactive course See the whole Linux roadmap

Free resources to learn TCP/IP

ArticleTCP/IP Commands for Linux
ArticleNetstat Command in Linux
ArticleNetstat Command in Linux: 13 Practical Examples

TCP/IP: common questions

Can I learn TCP/IP in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain TCP/IP in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this TCP/IP tutorial for beginners?

It is lesson 72 of 102 in the free Linux roadmap, in stage 13, Networking. If you are new to Linux, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.