Kernel Drivers

How to Configure HAProxy Load Balancer on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Configure HAProxy Load Balancer on FreeBSD 14

Introduction How to Configure HAProxy Load Balancer on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

Read more
NetBSD 9.4 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2011-1751 CVE-2011-2212 CVE-2011-2527 CVE-2012-0029 CVE-2012-6075 CVE-2013-4377 CVE-2014-5263 CVE-2014-3689  +12 more Upstream summary: pkgsrc audit-packages flagged qemu<0.15.0 for vulnerability class 'privilege-escalation'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1751 Table of contents Symptom & Impact Environment […]

Read more
How to Set Up OpenLiteSpeed on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up OpenLiteSpeed on FreeBSD 14

Introduction How to Set Up OpenLiteSpeed on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]

Read more
How to Tune Kernel Parameters with sysctl on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Tune Kernel Parameters with sysctl on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying tune kernel parameters with sysctl on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Tune Kernel Parameters with sysctl on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]

Read more
How to Automate Backups with rsync on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Automate Backups with rsync on FreeBSD 14

Introduction How to Automate Backups with rsync on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

Read more
How to Configure Redis Sentinel on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Redis Sentinel on Debian 12

Introduction Deploying configure redis sentinel 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 Before you begin, […]

Read more
How to Set Up PostgreSQL Streaming Replication on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on Debian 12

Introduction Deploying set up postgresql streaming replication 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 You […]

Read more
Oracle Linux 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-2458)

🟠 High   ⏱ 15–60 min  Last verified: 11 December 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2458 Related CVEs: CVE-2021-26341 CVE-2021-33655 CVE-2022-1462 CVE-2022-1789 CVE-2022-1882 CVE-2022-20141 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
How to Harden Web Servers on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Harden Web Servers on FreeBSD 14

Introduction How to Harden Web Servers on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]

Read more
How to Configure Database Backups with Automysqlbackup on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Database Backups with Automysqlbackup on Debian 12

Introduction Deploying configure database backups with automysqlbackup 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 Before […]

Read more
CHAT