22 posts · page 1 of 1
Understand the networking stack from TCP/IP to HTTP/3. Learn DNS resolution, the TLS handshake, WebSockets vs SSE, and how CDNs reduce latency — all through practical analogies.
Learn AWS VPC networking fundamentals including subnets, NAT gateways, route tables, security groups, and NACLs to build secure cloud architectures.
Learn Python socket programming from scratch. Build TCP and UDP servers and clients, handle multiple connections, and implement a simple chat application.
Learn how to configure Linux firewalls with iptables and nftables, including rules, chains, NAT, and migration strategies.
Learn how to use SSH local, remote, and dynamic port forwarding to securely access services across networks.
Design a scalable Domain Name System. Covers recursive and authoritative resolution, zone file management, caching, anycast deployment, and handling billions of lookups daily.
Compare API Gateway and Application Load Balancer for fronting AWS workloads, including features, pricing, latency, and when to use each in production.
Understand AWS PrivateLink: interface endpoints, endpoint services, how it differs from VPC peering and Transit Gateway, and when to choose it for private connectivity.
Understand simple, weighted, latency, failover, geolocation, and multivalue routing policies in Amazon Route 53 with real examples.
Network aliases let containers reach each other under multiple names. Learn how aliases work in Compose, when to use them, and the gotchas to avoid.
A clear guide to Docker's three most common network drivers, when to pick each one, and how packets actually flow between containers in real deployments.
Understand the three ways to expose a Kubernetes service to the outside world, the tradeoffs of each, and how to pick the right one for your workload.
How traffic actually flows in a Kubernetes cluster: the pod network, services, kube-proxy modes, and what a CNI plugin really does.
Learn iptables tables, chains, and rules. Build a working host firewall, understand NAT, and avoid the most common mistakes that lock you out.
Hands-on guide to Linux network namespaces. Create isolated network stacks, connect them with veth pairs, and understand how containers get networking.
Replace ifconfig and netstat with ip and ss. Learn to inspect interfaces, routes, and sockets on modern Linux with clear examples.
Learn local, remote, and dynamic SSH port forwarding with practical examples. Tunnel databases through bastions, expose local apps, and build SOCKS proxies safely.
A clear guide to Kubernetes Services. Learn what ClusterIP, NodePort, LoadBalancer, and headless Services do, and when to use each in real clusters.
Set up NGINX as a reverse proxy for Node, Python, or container backends with the right headers, timeouts, and TLS configuration for production.
A practical guide to Docker networking: the default bridge, user-defined bridges, host networking, container DNS, and how port publishing actually works.
A practical guide to modern Linux networking tools. Learn ip, ss, curl, and dig to diagnose connectivity, inspect sockets, and resolve DNS issues fast.
How Ingress, IngressClass, and Ingress controllers route external HTTP and HTTPS traffic to your Kubernetes Services — with host and path rules, TLS termination, and notes on ingress-nginx vs Traefik.