Interactive Tools
14 hands-on simulators to explore networking concepts. Click, experiment, and see how protocols actually work — from DNS lookups to BGP routing.
New to networking? Start with the Networking Zero to Hero course — 18 free video sessions that build the mental model, then come back to practice with these tools.
Tool 01
DNS Resolver
See how domain names resolve to IP addresses step by step
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Tool 02
Routing Table
Watch routers decide where to send your packets next
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Tool 03
ARP
Explore how devices discover each other on a local network
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Tool 04
TCP Handshake
Walk through the three-way handshake that starts every connection
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Tool 05
NAT Visualizer
See how private IP addresses map to public ones
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Tool 06
Packet Journey
Play through the full lifecycle of a network packet
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Tool 07
TLS Handshake
Watch encryption get negotiated in real time
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Tool 08
Certificate Trust
Follow the chain of trust from your browser to a root CA
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Tool 09
SSO & OAuth
See how single sign-on and OAuth flows work
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Tool 10
Session vs Token
Compare session cookies and JWT tokens side by side
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Tool 11
Servers
Understand what happens when a request hits a server
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Tool 12
Load Balancers
See how traffic gets distributed across multiple servers
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Tool 13
Firewalls
Watch packets get filtered by firewall rules
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Tool 14
BGP
Explore how the internet's backbone routing protocol works
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