Network Packet Journey
Follow a single HTTP/HTTPS packet through the entire network stack with stunning animations. Learn DNS, TCP, TLS, CDN, load balancing, and more!
Category: Networking
What You Will Learn
- Understand the TCP/IP network model
- Trace packet routing through network hops
- Learn about DNS resolution, NAT, and firewalls
Topics covered: educational, networking, interactive, visualization
// simulator
Network Packet Journey
Follow a single HTTP/HTTPS packet through the entire network stack with stunning animations. Learn DNS, TCP, TLS, CDN, load balancing, and more!
Try next
// simulator
DNS Resolution Simulator
Learn how DNS works with an interactive step-by-step simulator. Visualize the DNS hierarchy, understand caching at different levels, and see the difference between recursive and iterative queries.
// simulator
Kubernetes Networking / CNI Simulator
Visualize Kubernetes networking and CNI packet paths with an interactive simulator. Learn Pod-to-Pod routing, same-node and cross-node traffic, ClusterIP Services, EndpointSlices, headless Services, LoadBalancer, NodePort, kube-proxy, eBPF service routing, Ingress, NetworkPolicy, and internet egress.
// simulator
SMTP Flow Simulator
Visualize how SMTP email delivery works from app submission through EHLO, STARTTLS, AUTH, MAIL FROM, RCPT TO, DATA, SPF, DKIM, DMARC, recipient MX relay, retries, bounces, and inbox placement. Sponsored by SMTPfast.