Firewall

How to Configure the System Timezone on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure the System Timezone on Debian 12

Introduction Deploying configure the system timezone on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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How to Set Up Varnish Cache as a Reverse Proxy on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up Varnish Cache as a Reverse Proxy on RHEL 8

Varnish Cache is a high-performance HTTP accelerator designed to sit in front of web servers and serve cached responses at near-wire speed, offloading PHP and database work from your backend. On RHEL 8, Varnish is packaged in the default AppStream repository, making installation straightforward. This guide shows how to install Varnish, write a VCL configuration […]

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How to Configure Nginx FastCGI Caching on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx FastCGI Caching on RHEL 8

Nginx FastCGI caching dramatically reduces PHP processing load by storing rendered responses on disk and serving them directly to subsequent visitors. On RHEL 8, combining Nginx with a PHP-FPM backend and a well-configured cache can cut backend response times by 80–95% for cacheable pages. This tutorial walks through configuring the fastcgi_cache_path directive, defining cache keys, […]

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How to Set Up SSH Key Authentication on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up SSH Key Authentication on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up ssh key authentication on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully […]

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How to Automate Debian 13 Server Provisioning with Ansible — step-by-step Debian 13 tutorial on Progressive Robot

How to Automate Debian 13 Server Provisioning with Ansible

Introduction How to Automate Debian 13 Server Provisioning with Ansible 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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How to Configure Nginx as a TCP/UDP Load Balancer on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 13

Introduction How to Configure Nginx as a TCP/UDP Load Balancer 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 […]

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How to Configure Network Namespaces on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Network Namespaces on Debian 13

Introduction This guide explains how to Configure Network Namespaces 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 a PXE Boot Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Up a PXE Boot Server on Debian 13

Introduction This guide explains how to Set Up a PXE Boot Server 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 Configure IPv6 Networking on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure IPv6 Networking on Debian 13

Introduction How to Configure IPv6 Networking 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 Analyse Network Traffic with tshark on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Analyse Network Traffic with tshark on Debian 13

Introduction This guide explains how to Analyse Network Traffic with tshark 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 […]

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