DNS

openSUSE Leap 15.5 — dnsdist — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — dnsdist — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:2760-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-7069 CVE-2017-7557 CVE-2018-14663 Upstream summary: An issue has been found in dnsdist before 1.2.0 in the way EDNS0 OPT records are handled when parsing […]

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How to Install Podman as a Rootless Docker Alternative on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Podman as a Rootless Docker Alternative on RHEL 9

Podman is Red Hat’s recommended Docker-compatible container engine that runs containers without requiring a root-owned daemon. Unlike Docker, which requires the Docker daemon (dockerd) running as root, Podman runs containers directly as the user executing the command — a model called rootless containers. This eliminates an entire class of privilege escalation vulnerabilities: even if a […]

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NetBSD 9.4 — bind-9.2.0* — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — bind — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged bind for vulnerability class 'denial-of-service'. Reference: http://www.cert.org/advisories/CA-2002-15.html Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Common Problems 114452

RHEL 9 Chronyd Not Synchronizing Time

🟡 Medium   ⏱ 5–30 min  Last verified: 18 February 2024 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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How to Write Ansible Playbooks for FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Write Ansible Playbooks for FreeBSD 14

Introduction This guide explains how to Write Ansible Playbooks for FreeBSD 14 on FreeBSD 14. 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 for fine-grained privilege […]

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Alpine Linux 3.19 — rpcbind — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — rpcbind — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 0.2.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — rpcbind 0.2.4-r0 Related CVEs: CVE-2017-8779 Upstream summary: Alpine main repository for vv3.19 ships rpcbind 0.2.4-r0 which addresses CVE-2017-8779. Table of contents Symptom & Impact Environment […]

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How to Install ClamAV on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install ClamAV on FreeBSD 14

Introduction Deploying install clamav on freebsd 14 on a FreeBSD 14 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 Configure ModSecurity WAF with Apache2 on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure ModSecurity WAF with Apache2 on Debian 12

Introduction How to Configure ModSecurity WAF with Apache2 on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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 Install Nginx Ingress Controller on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install Nginx Ingress Controller on FreeBSD 14

Introduction FreeBSD 14 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install nginx ingress controller on freebsd 14 on FreeBSD 14 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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How to Configure Docker Daemon TLS on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Configure Docker Daemon TLS on FreeBSD 14

Introduction Deploying configure docker daemon tls on freebsd 14 on a FreeBSD 14 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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