Red Hat Enterprise Linux

How to Set Up ModSecurity WAF with Apache on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up ModSecurity WAF with Apache on RHEL 8

ModSecurity is a widely-deployed open-source Web Application Firewall (WAF) that integrates directly with Apache as a module. Combined with the OWASP Core Rule Set (CRS), it provides protection against the most common web attack categories including SQL injection, cross-site scripting, and remote code execution. On RHEL 8, both the mod_security Apache module and the mod_security_crs […]

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How to Install and Configure Caddy Web Server on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Configure Caddy Web Server on RHEL 8

Caddy is a modern, open-source web server written in Go that automatically provisions and renews TLS certificates via Let’s Encrypt. Unlike Apache or Nginx, Caddy requires almost no manual TLS configuration, making it an excellent choice for developers who want HTTPS out of the box. On RHEL 8, Caddy is not available in the default […]

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How to Configure Nginx Load Balancing on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx Load Balancing on RHEL 8

Load balancing distributes incoming client requests across multiple backend servers, preventing any single server from becoming a bottleneck and improving both throughput and fault tolerance. Nginx’s built-in load balancing is highly capable and available in the open-source version without any additional modules for most common use cases. On RHEL 8, you can configure Nginx to […]

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How to Enable HTTP/2 with Nginx on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Enable HTTP/2 with Nginx on RHEL 8

HTTP/2 delivers significant performance improvements over HTTP/1.1 through features such as header compression, request multiplexing, and server push — all over a single TCP connection. Nginx has supported HTTP/2 since version 1.9.5, and on RHEL 8 the AppStream version of Nginx is compiled with the necessary OpenSSL support to enable it. Because browsers only implement […]

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How to Configure Apache mod_proxy as a Reverse Proxy on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Apache mod_proxy as a Reverse Proxy on RHEL 8

Apache’s mod_proxy module turns your existing Apache web server into a fully functional reverse proxy without requiring a second web server like Nginx. This is particularly useful when you already have Apache managing SSL termination, virtual hosts, or authentication, and want to forward traffic to a backend application server such as Tomcat, Node.js, or a […]

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How to Configure Nginx as a Reverse Proxy on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on RHEL 8

Nginx is a high-performance web server that also excels as a reverse proxy, sitting in front of application servers and forwarding client requests to backend services running on internal ports. Using Nginx as a reverse proxy on RHEL 8 allows you to serve Node.js, Python, Java, or any HTTP-based application behind a clean public-facing endpoint […]

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How to Secure Apache with Let's Encrypt and Certbot on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Secure Apache with Let’s Encrypt and Certbot on RHEL 8

Securing your Apache web server with a free SSL/TLS certificate from Let’s Encrypt is one of the most important steps you can take to protect your visitors and improve your site’s trustworthiness. Certbot, the official Let’s Encrypt client, automates the entire certificate issuance and renewal process. On RHEL 8, Certbot is available through the EPEL […]

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How to Secure Nginx with Let's Encrypt and Certbot on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Secure Nginx with Let’s Encrypt and Certbot on RHEL 8

Let’s Encrypt provides free, automatically renewable TLS certificates, and Certbot is the recommended client for obtaining and managing them. On RHEL 8, the certbot and python3-certbot-nginx packages are available from the EPEL (Extra Packages for Enterprise Linux) repository. Once installed, Certbot can automatically obtain a certificate and modify your Nginx configuration to enable HTTPS. This […]

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How to Configure Apache Virtual Hosts on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Apache Virtual Hosts on RHEL 8

Apache virtual hosts allow a single Apache HTTP Server instance to respond to multiple domain names, each with its own document root, logs, and settings. On RHEL 8, virtual host configuration files are placed in /etc/httpd/conf.d/ and are automatically included by the main httpd.conf. This tutorial walks you through creating and enabling an Apache name-based […]

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How to Configure Nginx Server Blocks (Virtual Hosts) on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx Server Blocks (Virtual Hosts) on RHEL 8

Nginx server blocks — equivalent to Apache’s virtual hosts — allow a single Nginx instance to serve multiple websites from one server. Each server block defines a distinct configuration scope that responds to specific domain names or IP addresses. On RHEL 8, additional server block configuration files are stored under /etc/nginx/conf.d/ and automatically loaded by […]

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