Networking Labs

LAB · 01

Anycast Routing — Same IP, Many Places

Click a user location; see which anycast PoP receives the traffic.

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LAB · 02

BBR vs CUBIC Congestion Control

Compare throughput and cwnd dynamics under simulated packet loss.

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LAB · 03

DNS Resolution with Caching

Recursive DNS resolution from stub to root to authoritative, with TTL cache.

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LAB · 04

TCP 3-Way Handshake

Animated SYN / SYN-ACK / ACK between client and server, with sequence numbers.

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LAB · 05

TLS 1.3 Handshake

1-RTT TLS 1.3 handshake with key share and encrypted application data.

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