Networking

TCP/IP, DNS, HTTP, proxies, load balancers and firewalls.

7 concepts5 labs2 projects2 challenges

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Concepts

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Work through the concepts in order, or jump to what you need.

Networking Fundamentals

Concept · Hands-on lab included

TCP/IP & the OSI Model

Concept · Hands-on lab included

IP Addressing & Subnetting

Concept · Hands-on lab included

DNS & Name Resolution

Concept · Hands-on lab included

HTTP & HTTPS

Concept · Hands-on lab included

Load Balancers & Proxies

Concept · Hands-on lab included

Firewalls & Security Groups

Concept · Hands-on lab included

Practice

Hands-on labs

Apply what you've learned in guided, production-style environments.

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Inspect Your Network and Verify Connectivity

20 min · beginner · Networking Fundamentals

Capture the TCP Three-Way Handshake

30 min · intermediate · TCP/IP & the OSI Model

Subnet a Private Network by Hand

25 min · intermediate · IP Addressing & Subnetting

Trace a DNS Query with dig

25 min · intermediate · DNS & Name Resolution

Build

Projects

Ship real projects and grow a portfolio that gets you interviews.

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intermediate

Containerized Network Lab

Subnet, segment and firewall two services in Docker

10 hrs

beginner

DNS Black-Box Debugger

Trace and diagnose name resolution end to end

6 hrs

Continue

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