All the articles with the tag "linux".
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.
Your VM's clock is off by minutes. NTP is running but your system still drifts. Here's why.
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.
Set up a WireGuard VPN kill switch and prevent DNS leaks on Linux. Practical iptables rules, resolv.conf locking, and systemd-resolved config.
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 for home lab IDS/IPS: compare performance, rules, and setup. Includes Suricata installation, suricata.yaml config, EVE JSON logging, and OPNsense integration.
DNS broke again. Here's the exact command sequence to figure out what's happening without touching a GUI.
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.
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) let you buffer and synchronize between processes. They're underused but solve real problems: queuing, coordination, and complex data flows.
Go beyond ufw allow/deny: rate limiting with ufw limit, logging levels, before.rules for iptables, IPv6 handling, Docker bypass fixes, and fail2ban integration.
Declare, iterate, and manipulate arrays safely. Use indexed and associative arrays for clean bash code.
