DAY 1 · MODULE 5

Socket Programming Concepts

Understand how network clients and servers establish a connection and exchange data.

50 minGuided connection visualizationIn Progress
01 · LEARN

Understand the concept

Socket
Client
Server
IP and port
TCP connection
Send and receive
Connection lifecycle
Why this matters

Socket programming exposes the mechanics behind many network tools without requiring students to treat tools as black boxes.

02 · VISUALIZE

See what happens internally

Interactive visualization loads here.
Stage 2 Interactive Lab

Operate this concept in a larger realtime simulation and save your practical score.

Open Interactive Lab
03 · PRACTICAL

Perform the activity

  1. Follow the connection animation.
  2. Identify client IP, server IP and server port in a prepared example.
  3. Review a safe local TCP client/server code sample.
Workshop safety: Activities involving scanning, web vulnerabilities or security testing must be performed only on the assigned training target or intentionally vulnerable lab.
04 · CODE / COMMANDS

Read and understand the working example

Server concept:
socket() -> bind() -> listen() -> accept()
Client concept:
socket() -> connect() -> send() -> recv()

This example is shown for guided learning. Real host/network execution is reserved for the isolated cyber-range stage.

05 · CHALLENGE

Prove your understanding

Label the client, server and destination port in a sample TCP exchange and explain what listen and connect mean.

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