Tag: network
All the articles with the tag "network".
Networking Fundamentals Part 7 — Load Balancers and Proxies
The difference between L4 and L7 load balancers, reverse vs. forward proxies, distribution algorithms and session affinity, how CDNs intercept traffic,...
Networking Fundamentals Part 6 — TLS/SSL
The combination of symmetric and asymmetric encryption, the certificate trust chain with CAs, the TLS handshake step by step, Let's Encrypt and ACME,...
Networking Fundamentals Part 5 — HTTP and HTTPS
The structure of requests and responses, methods and status codes, key headers, the evolution from HTTP/1.1 to HTTP/3, and why HTTPS became the...
Networking Fundamentals Part 4 — DNS
The full journey of a domain name becoming an IP address. From root to TLD to authoritative name servers. Record types, TTL and caching, and reading...
Networking Fundamentals Part 3 — TCP and UDP
TCP's reliability built on 3-way handshakes and flow/congestion control, versus UDP's deliberate simplicity. Plus the reality behind ports and sockets.
Networking Fundamentals Part 2 — IP Addresses and Subnets
From IPv4's 32-bit structure to CIDR, subnet masks, NAT, and IPv6. A ground-up walkthrough of the internet's addressing system.
Networking Fundamentals Part 1 — OSI and TCP/IP Models
Why networks are divided into layers. Comparing the OSI 7-layer model with the TCP/IP 4-layer model, and tracing how a packet flows through each layer.