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How to Set Up Snort IDS on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Up Snort IDS on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up set up snort ids on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration […]

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How to Manage Users and Groups with useradd, groupadd and passwd on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Manage Users and Groups with useradd, groupadd and passwd on RHEL 8

Managing users and groups is one of the most fundamental tasks for any Linux system administrator. On Red Hat Enterprise Linux 8, the useradd, groupadd, and passwd commands provide powerful options for creating and controlling accounts. Understanding how to set password policies, manage group memberships, and configure account aging will help you maintain a secure, […]

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How to Configure Suricata IDS on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Suricata IDS on Debian 13

Introduction This guide explains how to Configure Suricata IDS on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with the standard […]

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How to Set Up SELinux on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Up SELinux on Debian 13

Introduction How to Set Up SELinux on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This […]

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How to Configure Log Rotation with logrotate on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Log Rotation with logrotate on RHEL 8

Log files grow indefinitely unless something rotates and prunes them, which will eventually fill a disk and crash your services. On RHEL 8, logrotate is installed by default and handles rotation for most system logs out of the box via a systemd timer. For application logs your team manages, you need to write a custom […]

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How to Configure Automatic Kernel Hardening with Hardening.io on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Automatic Kernel Hardening with Hardening.io on Debian 13

Introduction This guide explains how to Configure Automatic Kernel Hardening with Hardening.io on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install […]

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How to Use tmux for Terminal Multiplexing on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Use tmux for Terminal Multiplexing on RHEL 8

tmux is a terminal multiplexer that lets you run multiple shell sessions inside a single terminal window, keep sessions alive after you disconnect from SSH, and split your screen into panes for simultaneous work. On RHEL 8 it is available from the default AppStream repository and requires no additional configuration to get started. This tutorial […]

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How to Run Lynis Security Audit on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Run Lynis Security Audit on Debian 13

Introduction This guide explains how to Run Lynis Security Audit on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with the […]

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How to Set Up a Bash Profile, .bashrc and Environment Variables on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a Bash Profile, .bashrc and Environment Variables on RHEL 8

Every interactive shell session on RHEL 8 is governed by a chain of startup scripts that define environment variables, aliases, functions, and the prompt. Understanding which file is loaded and when prevents confusion around why a variable set in one terminal disappears in another, or why a cron job cannot find a command that works […]

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How to Harden the GRUB Bootloader on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Harden the GRUB Bootloader on Debian 13

Introduction How to Harden the GRUB Bootloader on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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