Technology

A byte-by-byte walkthrough of a TLS 1.3 handshake using OpenSSL’s s_client, comparing each message to its TLS 1.2 counterpart. Highlights how encryption, key exchange, and extensions differ in the latest revision.

Learn how to use Decryption Policy rules in Palo Alto Networks to define which traffic to decrypt and which to exclude. This guide also covers best practices for blocking QUIC and applying strict security profiles to sensitive traffic categories.

A beginner-friendly overview of Virtual LANs, covering their benefits, typical usage scenarios, and the fundamentals of 802.1Q VLAN tagging.

This guide walks through four key PostgreSQL configuration settings that significantly impact server performance. Learn how to tune shared_buffers, wal_buffers, effective_cache_size, and work_mem for your specific workload.

Calculating the right number of Linux huge pages for PostgreSQL is trickier than just dividing shared_buffers by the page size. This walkthrough shows how to use tuned to manage allocation and why you need to round up based on actual memory usage.

A practical guide to managing PostgreSQL WAL retention using the pg_archivecleanup utility, covering dry-run and delete modes, retention criteria, and a code walkthrough for novice users.