IT, Cloud & DevOps Blog

Common Problems 122003

PF Rules Accidentally Block Outbound Traffic

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 2026 Affected versions: FreeBSD 15 📖 ~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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Common Problems 114032

auditd backlog limit exceeded under load

🟠 High   ⏱ 5–30 min  Last verified: 4 August 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~1 min read Table of contents Problem Summary Symptoms Diagnostics Root Cause Primary Fix Verification Prevention Rollback Automation Command Reference Escalation Related Notes Problem Summary Kernel audit queue overflows causing dropped audit events. Symptoms Messages show backlog […]

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iso 27001 certification cost uk smes a certificate seal on stacked coin discs

ISO 27001 Certification Cost: The Smart, Essential UK SME Guide

The realistic ISO 27001 certification cost for a UK SME lands between roughly £6,000 and £48,000 in the first year, and almost none of that sits on a single invoice. This guide splits the number into certification body audit fees, external support, tooling and internal staff time, benchmarks each by headcount, explains how audit days are calculated, sets out a realistic six to twelve month timeline from gap analysis to certificate, and lists nine levers that genuinely reduce spend without putting the audit outcome at risk.

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cyber security and resilience bill a glossy shield ringed by network nodes

Cyber Security and Resilience Bill: Essential Risk Guide

The Cyber Security and Resilience Bill brings managed service providers, data centres and designated critical suppliers into cyber regulation for the first time. Even businesses that are never regulated directly will feel it, because their IT supplier acquires a regulator, a 24-hour incident reporting clock and turnover-based fines. This guide covers where the Bill has reached in Parliament, the four-part managed service provider test, the customer notification duty most buyers miss, the two penalty bands, and the five questions worth putting to your provider before your next renewal.

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microsoft 365 licence business premium vs e3 vs e5 a three ascending glowing platforms with floating cube

Microsoft 365 Licence: Proven Guide to Avoid Overpaying

Business Premium, E3 and E5 are not small, medium and large versions of the same product. Business Premium caps at 300 seats but ships a security stack that E3 quietly drops — moving up a tier can remove your email threat protection and endpoint detection unless you buy them back. This guide sets out what each plan genuinely includes, the three-year cost spread across fifty users, the E3 plus E5 Security route most buyers never hear about, why mixing tiers beats licensing everyone identically, and the buying terms that decide what the subscription really costs at renewal.

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How to Set Up iSCSI Initiator on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up iSCSI Initiator on SLES 16

Introduction This tutorial covers How to Set Up iSCSI Initiator on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper […]

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NetBSD 10.0 — mold — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — mold — vulnerability — 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-2026-3994 Upstream summary: pkgsrc audit-packages flagged mold-[0-9]* for vulnerability class 'heap-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-3994 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Set Up VLANs on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up VLANs on SLES 16

Introduction This tutorial covers How to Set Up VLANs on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

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Common Problems 114462

RHEL 9 Yum Alias Scripts Break After Migration to DNF

🟡 Medium   ⏱ 5–30 min  Last verified: 3 August 2026 📖 ~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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NetBSD 10.0 — php-concrete-cms — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — php-concrete-cms — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2026-3452 CVE-2024-2753 CVE-2024-3178 CVE-2024-3179 CVE-2024-3180 CVE-2024-3181 CVE-2025-8571 CVE-2025-8573  +5 more Upstream summary: pkgsrc audit-packages flagged php{56,74,81,82,83,84}-concrete-cms<9.4.8 for vulnerability class 'code-execution'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-3452 Table of contents Symptom & Impact Environment […]

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