Advanced Networking

From fundamentals like addresses and gateways, through the hairpin NAT you will certainly hit when you open a server at home, to Envoy — the thing a service mesh actually is — and Istio above it.

코스

• Addresses, Subnets and Gateways — Why classes A, B and C disappeared, and what replaced them
• Network Fundamentals — Hands-on in a Linux VM — Touch ARP, routing, DNS, TCP, firewalls and NAT with netns and tcpdump
• Network Troubleshooting — Break a report of "it doesn't work" into layers.
• Kubernetes Networking — On a Real Cluster — Count for yourself how a name resolves and what a policy blocks
• Envoy Internals — In the end this proxy is what handles a service mesh's traffic
• Istio Deep Dive — Why It Flows That Way — A VirtualService on its own does nothing
• The certificate was renewed, but the browser still showed the old one — Reproduce DNS caching and TLS certificates by hand inside a pod
• Sessions and Tokens — From the Browser to the Mesh — What flows after login, and where it breaks.
• Istio Field Lab — Measure gateways, ambient mode and upgrades on a real mesh