Kernel Drivers

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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How to Capture Packets with tcpdump on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Capture Packets with tcpdump on Debian 13

Introduction Deploying capture packets with tcpdump on a Debian 13 Trixie 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 You will need a registered […]

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How to Set Up an SFTP-Only Jail on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Up an SFTP-Only Jail on Debian 13

Introduction Deploying set up an sftp-only jail on a Debian 13 Trixie 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 You will need a […]

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How to Configure SPF and DMARC Records on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure SPF and DMARC Records on Debian 13

Introduction How to Configure SPF and DMARC Records 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 […]

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How to Configure OpenDKIM with Postfix on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 13

Introduction How to Configure OpenDKIM with Postfix 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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How to Configure Dovecot IMAP Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Dovecot IMAP Server on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure dovecot imap server 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 Configure Postfix Mail Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Postfix Mail Server on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure postfix mail server 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 Enable Brotli and Gzip Compression in Nginx on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Enable Brotli and Gzip Compression in Nginx on RHEL 8

Compression reduces the byte size of HTTP responses, lowering bandwidth consumption and improving page load times. Nginx ships with built-in Gzip support through ngx_http_gzip_module, but Gzip has largely been superseded by Brotli for text content — the Brotli algorithm typically achieves 15–25% better compression ratios at equivalent CPU cost. On RHEL 8, Gzip requires only […]

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