Kernel Drivers

How to Configure Static File Serving with Nginx on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Static File Serving with Nginx on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying configure static file serving with nginx both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Static File Serving with Nginx on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Detect Rootkits with rkhunter and chkrootkit on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Detect Rootkits with rkhunter and chkrootkit on RHEL 9

Rootkits are among the most dangerous forms of malware — they conceal themselves and other malicious software deep within the operating system, often modifying system binaries and kernel modules to hide their presence from standard tools. Detecting rootkits requires specialised scanners that check for known signatures, hidden files, suspicious processes, and tampered system binaries. This […]

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How to Configure Nginx Load Balancing on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Nginx Load Balancing on RHEL 10

Introduction How to Configure Nginx Load Balancing on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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How to Configure nftables Firewall on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure nftables Firewall on RHEL 9

nftables is the modern successor to iptables and is the default firewall framework in RHEL 9. It replaces iptables, ip6tables, arptables, and ebtables with a single unified tool, offering better performance through an improved kernel path, atomic rule replacement, and a cleaner, more readable configuration syntax. This tutorial covers everything you need to know to […]

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How to Install HAProxy Load Balancer on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install HAProxy Load Balancer on RHEL 10

Introduction How to Install HAProxy Load Balancer on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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How to Configure iptables Firewall Rules on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure iptables Firewall Rules on RHEL 9

iptables has been the standard Linux packet-filtering firewall for over two decades, and while RHEL 9 ships with nftables and firewalld as the preferred tools, iptables remains available and is widely understood by seasoned administrators. Learning iptables gives you deep insight into how Linux netfilter works and is valuable for managing legacy systems or containers […]

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How to Set Up Two-Factor Authentication for SSH with Google Authenticator on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication for SSH with Google Authenticator on RHEL 9

Password-based SSH authentication is a well-known attack vector, and even key-based authentication can be compromised if a private key is stolen. Adding Time-Based One-Time Password (TOTP) two-factor authentication creates a second layer of defense that is independent of the key. This tutorial shows you how to configure the Google Authenticator PAM module on RHEL 9 […]

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How to Configure SELinux on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure SELinux on RHEL 9

SELinux (Security-Enhanced Linux) is a mandatory access control (MAC) framework built into the Linux kernel, developed by the NSA and now maintained as a core part of RHEL. Unlike traditional discretionary access control (DAC) where file permissions determine access, SELinux enforces policies that confine every process to the minimum resources it legitimately needs — even […]

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How to Enable Gzip and Brotli Compression in Nginx on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Enable Gzip and Brotli Compression in Nginx on RHEL 10

Introduction How to Enable Gzip and Brotli Compression in Nginx on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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How to Set Up HTTP/3 (QUIC) in Nginx on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up HTTP/3 (QUIC) in Nginx on RHEL 10

Introduction How to Set Up HTTP/3 (QUIC) in Nginx on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

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