Tag: linux

All the articles with the tag "linux".

• Auditd & Audit Logging: Know Exactly Who Touched What on Your Server

  7 Nov, 2025

  Master auditd for Linux audit logging: watch critical files, audit syscalls, use aureport and ausearch, and ship logs to Loki or Elasticsearch for compliance and security monitoring.

• Time Sync on VMs: Why NTP Keeps Drifting

  4 Nov, 2025

  Your VM's clock is off by minutes. NTP is running but your system still drifts. Here's why.

• The MTU Problem Nobody Diagnoses Correctly

  28 Oct, 2025

  MTU mismatches silently break large file transfers, backups, and video calls. Here's how to find and fix the wrong frame size on your network.

• VPN Kill Switch and DNS Leak Prevention: Paranoia, Justified

  25 Oct, 2025

  Set up a WireGuard VPN kill switch and prevent DNS leaks on Linux. Practical iptables rules, resolv.conf locking, and systemd-resolved config.

• BGP in Your Home Lab: Dynamic Routing for People Who've Run Out of Static Routes

  25 Oct, 2025

  Run BGP in your home lab with FRRouting. Covers iBGP vs eBGP, FRR installation, basic BGP config, peering with OPNsense, route filtering, and when BGP is actually worth the complexity.

• Suricata vs Snort: Intrusion Detection for the Paranoid Home Lab Owner

  24 Oct, 2025

  Suricata vs Snort for home lab IDS/IPS: compare performance, rules, and setup. Includes Suricata installation, suricata.yaml config, EVE JSON logging, and OPNsense integration.

• Systemd Timers vs Cron: Scheduling Tasks Like It's Not 1995

  23 Oct, 2025

  Systemd timers vs cron: when to use each for scheduled Linux tasks. Learn systemd timer units, OnCalendar syntax, journalctl logging, and where cron still wins.

• ZFS vs Btrfs: Choosing a Filesystem That Won't Eat Your Data

  21 Oct, 2025

  ZFS vs Btrfs compared for home labs and NAS in 2026. Snapshots, data integrity, RAID — find out which Linux filesystem deserves your precious data.

• DNS Troubleshooting from the Command Line

  15 Oct, 2025

  DNS broke again. Here's the exact command sequence to figure out what's happening without touching a GUI.

• Linux Capabilities: Drop Root Without Breaking Everything

  24 Sep, 2025

  Learn Linux capabilities to drop root privileges without breaking your apps. Master cap_drop, cap_add in Docker, and setcap for fine-grained privilege control.

• curl Flags Every Developer Should Know

  19 Sep, 2025

  Master the curl flags that'll save you hours debugging APIs, downloads, and web requests. From -X to --compressed, here's what actually matters.

• Named Pipes (FIFOs) in Shell Scripts

  15 Sep, 2025

  Named pipes (FIFOs) let you buffer and synchronize between processes. They're underused but solve real problems: queuing, coordination, and complex data flows.