Netpractice 42 Tutorial 【2026】

NetPractice is a core project at 42 school that introduces the fundamentals of networking without writing a single line of code. It consists of 10 levels of interactive exercises where you must configure IP addresses, subnet masks, and routing tables to enable communication between various machines and routers. 1. Essential Theory Checklist

Level 2 – Add a Router (Default Gateway)

Scenario: Two networks separated by one router. Task: PC1 on Network A to PC2 on Network B. Solution: netpractice 42 tutorial

• “For Network X, go out Interface Y” or “For Network Z, send to next-hop router W.”

Did this tutorial help? Share it with your fellow cadets. And if you find an even trickier level, drop a comment below—let’s debug together. NetPractice is a core project at 42 school