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How to Install Apache Tomcat 10 on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Apache Tomcat 10 on Debian 13

Introduction Deploying install apache tomcat 10 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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openSUSE Leap 15.6 — gdb — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — gdb — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:3179-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-48064 Upstream summary: GNU Binutils before 2.40 was discovered to contain an excessive memory consumption vulnerability via the function bfd_dwarf2_find_nearest_line_with_alt at dwarf2.c. The attacker […]

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Common Problems 111106

Windows Server 2025 — Domain user cannot log in after password reset — cached credentials stale — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 3 October 2025 Affected versions: Windows Server 2025 📖 ~2 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 […]

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Common Problems 127158

CentOS Stream 10 – Common Problem 170 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 2 October 2025 Affected versions: CentOS Stream 10 📖 ~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 […]

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How to Configure the Firewall on RHEL 9 with firewalld — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure the Firewall on RHEL 9 with firewalld

Red Hat Enterprise Linux 9 uses firewalld as its default firewall management daemon, backed by nftables as the kernel netfilter framework (replacing iptables which was the default in RHEL 7 and earlier). firewalld provides a zone-based model where each network interface is assigned to a trust zone — public, internal, dmz, trusted, and more — […]

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NetBSD 10.0 — nettle — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — nettle — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2015-8805 CVE-2015-8804 CVE-2015-8803 CVE-2018-16869 CVE-2021-20305 CVE-2016-6489 Upstream summary: pkgsrc audit-packages flagged nettle<3.2 for vulnerability class 'unspecified'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8805 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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NetBSD 10.0 — gcc7 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — gcc7 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2019-15847 CVE-2018-12886 Upstream summary: pkgsrc audit-packages flagged gcc7-[0-9]* for vulnerability class 'insufficiently-random-numbers'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2019-15847 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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Common Problems 124072

Oracle Linux 10 – journalctl shows corrupted boot journal after abrupt power loss – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 October 2025 Affected versions: Oracle Linux 10 📖 ~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 […]

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How to Harden the Kernel with sysctl on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Harden the Kernel with sysctl on Oracle Linux 10

Introduction How to Harden the Kernel with sysctl on Oracle Linux 10 on Oracle Linux 10 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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Common Problems 124033

Oracle Linux 10 Firewalld Rich Rule Blocks Expected Service Traffic

🟠 High   ⏱ 5–30 min  Last verified: 2 October 2025 Affected versions: Oracle Linux 10 📖 ~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 […]

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