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How to Deploy a Spring Boot Application on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Deploy a Spring Boot Application on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up deploy a spring boot application on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any […]

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Arch Linux — pam-u2f — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — pam-u2f — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202106-16 Related CVEs: CVE-2021-31924 CVE-2019-12210 CVE-2019-12209 Upstream summary: Type: authentication bypass. Status: Fixed. Affected: 1.1.0-1. Fixed in: 1.1.1-1. Group: AVG-2001. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How to Deploy a Ruby on Rails Application on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Deploy a Ruby on Rails Application on FreeBSD 13

Introduction This guide explains how to Deploy a Ruby on Rails Application on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum […]

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Debian 11 — spamass-milter — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — spamass-milter — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 September 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-1132 Upstream summary: The mlfi_envrcpt function in spamass-milter.cpp in SpamAssassin Milter Plugin 0.3.1, when using the expand option, allows remote attackers to execute arbitrary system commands via shell […]

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How to Set Up NFS Server on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up NFS Server on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up nfs server on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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Oracle Linux 8 — mod_auth_openidc:2.3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mod_auth_openidc:2.3 — vulnerability — patch and remediation guide (ELSA-2022-1823)

🟡 Medium   ⏱ 10–30 min  Last verified: 30 September 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1823 Related CVEs: CVE-2021-32786 CVE-2021-32792 CVE-2021-39191 CVE-2021-32791 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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How to Configure newsyslog Log Rotation on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure newsyslog Log Rotation on FreeBSD 13

Introduction Deploying configure newsyslog log rotation on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard […]

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How to Set Up Grafana Alerting on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up Grafana Alerting on FreeBSD 13

Introduction How to Set Up Grafana Alerting on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 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 […]

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How to Set Up OpenLiteSpeed on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up OpenLiteSpeed on FreeBSD 13

Introduction Deploying set up openlitespeed on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]

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How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 7

How to Use Prometheus Blackbox Exporter for Endpoint Monitoring on RHEL 7 The Prometheus Blackbox Exporter probes external endpoints over HTTP, HTTPS, TCP, ICMP, and DNS from the perspective of an outside caller, making it an essential complement to node-level metrics collected by Node Exporter. While Node Exporter tells you about CPU load and memory […]

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