DNS

How to Set Up NFS on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up NFS on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up nfs on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up NFS on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Gentoo Linux — net-dns/bind-tools — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-dns/bind-tools — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202210-25 Related CVEs: CVE-2021-25219 CVE-2021-25220 CVE-2022-0396 CVE-2022-2795 CVE-2022-2881 CVE-2022-2906 CVE-2022-3080 CVE-2022-38177  +1 more Upstream summary: Multiple vulnerabilities have been discovered in ISC BIND. Please review the CVE identifiers referenced below for details. […]

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How to Configure Nginx with PageSpeed Module on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Nginx with PageSpeed Module on CentOS Stream 9

Introduction How to Configure Nginx with PageSpeed Module on CentOS Stream 9 on CentOS Stream 9 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 Configure Windows Firewall on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Windows Firewall on Windows Server 2012 R2

How to Configure Windows Firewall on Windows Server 2012 R2 Windows Firewall with Advanced Security (WFAS) is the host-based stateful packet filter built into Windows Server 2012 R2. Unlike its consumer counterpart, the server version includes full inbound and outbound rule management, connection security rules for IPsec, and fine-grained profile controls for Domain, Private, and […]

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How to Install and Configure Cassandra on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install and Configure Cassandra on Debian 11

Introduction How to Install and Configure Cassandra on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 11. […]

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How to Install Nginx on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Nginx on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying install nginx on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Nginx on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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How to Set Up Bash Aliases and Environment Variables on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Bash Aliases and Environment Variables on Debian 11

Introduction Deploying set up bash aliases and environment variables on debian 11 on a Debian 11 Bullseye 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. […]

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How to Configure Swap Space on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Swap Space on Debian 11

Introduction How to Configure Swap Space on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 11. This […]

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Alpine Linux edge — coredns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — coredns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.9.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — coredns 1.9.3-r0 Related CVEs: CVE-2022-27191 CVE-2022-28948 Upstream summary: Alpine community repository for vedge ships coredns 1.9.3-r0 which addresses CVE-2022-27191. Table of contents Symptom & Impact […]

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How to Install HAProxy on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install HAProxy on CentOS Stream 9

Introduction How to Install HAProxy on CentOS Stream 9 on CentOS Stream 9 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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