Linux Archives - ITFROMZERO - Share tobe shared!

How to Install and Configure nftables on Linux: A Complete iptables Replacement

By IT From Zero October 23, 2026

Learn how to configure nftables to replace iptables on Linux. Boost network performance with modern syntax, set up NAT, and prevent SSH brute-force attacks automatically.

Fedora

A Guide to bpftrace and BCC on Fedora: Linux Performance Analysis and Diagnostics with eBPF

By IT From Zero October 22, 2026

Server lagging while top and iotop report normal metrics? Tap into eBPF with BCC and bpftrace on Fedora to dissect latency, disk I/O, and networking with sub-1.5% overhead.

Linux

Configuring auditd on Linux: Monitor Sensitive Files, Log User Commands, and Trace Intrusions

By IT From Zero October 21, 2026

A hands-on guide to configuring auditd on Linux: monitoring passwd/sudoers files, logging user commands by auid, tuning buffers to prevent disk overflow, and analyzing logs with ausearch.

Fedora

How to Join Fedora Server to Microsoft Active Directory Using realmd and SSSD

By IT From Zero October 21, 2026

A step-by-step guide to integrating Fedora Server into Microsoft Active Directory using realmd and SSSD. Covers architecture comparisons, automatic home directories, sudo delegation for AD groups, and offline cache verification.

Linux

Basic SELinux Administration Guide: Security Contexts, Booleans, and Troubleshooting AVC Denials

By IT From Zero October 20, 2026

Hit with a midnight 403 Forbidden on RHEL/AlmaLinux due to SELinux denials? Here is a 5-step guide to reading AVC logs, fixing Security Contexts, and setting Booleans without disabling SELinux.

Fedora

How to Install and Configure BorgBackup on Fedora Server: Automating Data Backups over SSH

By IT From Zero October 20, 2026

A comprehensive guide to setting up BorgBackup on Fedora Server. Leverage deduplication to save 80% disk space, secure backups with AES encryption, and automate via Systemd timers.

Fedora

Installing Headscale on Fedora Server: Self-Host a Private Tailscale Mesh VPN

By IT From Zero October 18, 2026

A practical guide to deploying a Headscale coordination server on Fedora Server to run your own WireGuard mesh VPN. Optimize direct P2P connections, configure subnet routing, and troubleshoot common real-world routing issues.

Linux

A Guide to ncdu and duf on Linux: Visual Disk Usage Analysis and Cleanup from the Command Line

By IT From Zero October 16, 2026

Replace legacy df and du tools with ncdu and duf on Linux. Learn how to pinpoint storage hogs, resolve deleted open file locks, and clean up server disks safely.

Linux

Linux ZRAM Guide: Optimize Memory and Speed Up Your System with Compressed Swap

By IT From Zero October 13, 2026

ZRAM sets up a compressed swap partition directly in physical memory, helping Linux servers relieve memory exhaustion and fend off the OOM Killer without disk I/O bottlenecks.

Fedora

Installing Grafana Loki and Promtail on Fedora Server: Centralized Logging, Way Lighter than ELK

By IT From Zero October 11, 2026

A hands-on production guide to deploying Grafana Loki and Promtail on Fedora Server for centralized logging. Highly resource-efficient compared to ELK, using under 400MB of RAM.