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Interactive networking fundamentals

Learn networking by moving packets.

Trigger protocol flows and watch packets travel in real time.

Start learningExplore labs
Open Learning Map

Live network path

Device - Router - DNS - Server

SYN
SYN

Current event

Device starts the request.

Packet fields

typeSYN
fromDevice
toDevice
Start here

Pick your starting point.

Start first 3 steps

Recommended

Complete Beginner Path

Start with signals and end with your first security mental model.

What is communication?
Data, bits, and bytes
Bandwidth
Latency
Network Fundamentals Map

Start your networking journey in order.

The map shows what is available now, what comes next, and how each concept connects.

View full map
Locked

What is communication?

Two systems exchange meaning through agreed signals.

beginner
6 min
Preview
Locked

Data, bits, and bytes

See how information becomes binary values.

beginner
8 min
Preview
Locked

Bandwidth

How much data a link can carry.

beginner
7 min
L1
Preview
Locked

Latency

How long a packet takes to arrive.

beginner
7 min
Preview
Locked

Throughput

The actual delivered data rate.

beginner
7 min
Preview
Locked

Host

An endpoint that sends or receives data.

beginner
5 min
L1
Preview
Unlocked now

Open the labs available in this MVP.

These modules link to working interactive tools. Locked modules remain visible in the full map.

Browse tools
Available

Binary Converter

Convert decimal octets into binary bits.

beginner
8 min
Open
Available

Subnet Visualizer

Split an IPv4 address into network and host bits.

beginner
12 min
L3
Open
Available

Routing Visualizer

Watch packets follow the lowest-cost path.

beginner
10 min
L3
Open
Available

TCP Socket Lab

Open a connection and inspect TCP flags, seq, and ack.

beginner
10 min
L4
Open
Available

DNS Flow Visualizer

Follow a recursive lookup from browser to answer.

beginner
10 min
L7
Open
Available

OSI Model Visualizer

Inspect layers and encapsulation from data to bits.

beginner
10 min
Open
Available

ARP Broadcast Lab

Broadcast a request and watch the LAN answer.

intermediate
12 min
L2
Open

Choose by goal

Different goals use the same fundamentals in different orders.

I want to understand the internet

Names, addresses, routers, TCP, and web requests.

DNS Flow Visualizer
Subnet Visualizer
Routing Visualizer
TCP Socket Lab
Start here

I want to pass networking exams

OSI, addressing, subnetting, routing, and core protocols.

OSI Model Visualizer
Binary Converter
Subnet Visualizer
Routing Visualizer
Start here

I want to learn cybersecurity

Ports, TCP, DNS, TLS, firewalls, scanning, and sniffing.

TCP Socket Lab
DNS Flow Visualizer
TLS basics
Firewalls
Start here

I want to become a network engineer

Devices, VLANs, routing tables, NAT, OSPF, and BGP.

Switch
Router
Subnet Visualizer
Routing Visualizer
Start here

I want to debug Wi-Fi/home network issues

Latency, DNS, gateways, Wi-Fi congestion, DHCP, and NAT.

Latency
Default gateway
DNS Flow Visualizer
DHCP
Start here

I want to understand cloud networking

VPCs, cloud subnets, security groups, load balancers, and gateways.

Subnet Visualizer
VPC
Subnets in cloud
Security groups
Start here
Coming later

Locked modules preview the full curriculum.

AckLab keeps future concepts visible without pretending they are implemented.

Locked

What is communication?

Two systems exchange meaning through agreed signals.

beginner
6 min
Preview
Locked

Data, bits, and bytes

See how information becomes binary values.

beginner
8 min
Preview
Locked

Bandwidth

How much data a link can carry.

beginner
7 min
L1
Preview
Locked

Latency

How long a packet takes to arrive.

beginner
7 min
Preview
Locked

Throughput

The actual delivered data rate.

beginner
7 min
Preview
Locked

Jitter

Variation in packet delay.

beginner
5 min
Preview
Locked

Packet switching

Data moves as small independent packets.

beginner
8 min
Preview
Locked

Circuit switching

A dedicated path is reserved before communication.

beginner
5 min
Preview
Roadmap

Clean MVP today, scalable platform tomorrow.

Backend, payments, authentication, analytics, and persistence are intentionally not implemented. Their contracts and folders are present so the platform can grow without a rewrite.

Quiz engine and adaptive concept checks
User progress and course path persistence
Admin dashboard for content operations
Secure auth, RBAC, subscriptions, and payment workflows
Analytics, audit logging, and rate limited API integrations
AAckLab

Interactive networking fundamentals, visual simulations, and practical tools for developers and infrastructure teams.

Visualizers

TCP handshakeOSI modelDNS flow

Tools

Subnet visualizerBinary converterTool dashboard