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How to Configure Apache mod_proxy as a Reverse Proxy on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Apache mod_proxy as a Reverse Proxy on RHEL 9

  • November 7, 2025
  • Linux
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Apache’s mod_proxy module turns Apache into a powerful reverse proxy and gateway, forwarding requests to backend application servers, other web servers, or balancer clusters. Unlike Nginx’s reverse proxy (which is native), Apache’s proxy functionality is modular: mod_proxy handles the core proxying, mod_proxy_http handles HTTP/1.1, mod_proxy_balancer provides load balancing, and mod_proxy_wstunnel handles WebSocket tunnelling. On RHEL […]

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How to Configure Nginx as a Reverse Proxy on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on RHEL 9

  • November 7, 2025
  • Linux
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A reverse proxy sits in front of one or more backend application servers, forwarding client requests to them and returning their responses to the client. From the client’s perspective, the reverse proxy is the web server. This architecture provides centralized SSL termination, load balancing, caching, rate limiting, and DDoS mitigation without exposing backend application ports […]

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How to Configure Nginx as a Reverse Proxy on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on SLES 16

Introduction This tutorial covers How to Configure Nginx as a Reverse Proxy on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to […]

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How to Secure Apache with Let's Encrypt and Certbot on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Secure Apache with Let’s Encrypt and Certbot on RHEL 9

  • November 7, 2025
  • Linux
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Like Nginx, Apache can be secured with free SSL/TLS certificates from Let’s Encrypt using Certbot. The python3-certbot-apache plugin performs domain validation, obtains the certificate, and automatically updates your Apache virtual host configuration with the SSL directives, HTTP-to-HTTPS redirect, and modern cipher settings. This guide covers installing Certbot on RHEL 9, obtaining a certificate for your […]

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How to Configure a Virtual Host in Nginx on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure a Virtual Host in Nginx on SLES 16

Introduction This tutorial covers How to Configure a Virtual Host in Nginx on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to […]

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How to Set Up HTTP/3 with Nginx on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Up HTTP/3 with Nginx on Debian 13

  • November 7, 2025
  • Linux
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Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up set up http/3 with nginx 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 […]

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How to Configure Automatic Security Updates on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Automatic Security Updates on RHEL 9

  • November 6, 2025
  • Linux
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Unpatched software is the leading cause of server compromise. The majority of publicly disclosed vulnerabilities already have patches available by the time attackers start actively exploiting them — the window between patch availability and active exploitation has shrunk from months to days. Manually patching servers is error-prone and inconsistent at scale. Automatic security updates ensure […]

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How to Configure AppArmor Enforcement on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure AppArmor Enforcement on SLES 16

Introduction This tutorial covers How to Configure AppArmor Enforcement on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Check AppArmor Status systemctl status apparmor aa-status Step 2 […]

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How to Secure Nginx with Let's Encrypt and Certbot on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Secure Nginx with Let’s Encrypt and Certbot on RHEL 9

  • November 6, 2025
  • Linux
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HTTPS is no longer optional — browsers mark HTTP sites as “Not Secure”, search engines penalise them in rankings, and many modern browser APIs (service workers, geolocation, camera access) require a secure context. Let’s Encrypt provides free, automated, and trusted SSL/TLS certificates via the ACME protocol, and Certbot is the recommended ACME client that handles […]

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How to Configure Apache Virtual Hosts on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Apache Virtual Hosts on RHEL 9

  • November 6, 2025
  • Linux
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Apache virtual hosts are the mechanism by which a single Apache HTTP Server instance serves multiple websites, distinguishing between them using the ServerName directive and the incoming Host HTTP header. Name-based virtual hosting (the most common type) allows hundreds of domains to share a single IP address, with Apache routing each request to the correct […]

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