Operations

How to Configure Group Policy Security Filtering on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Group Policy Security Filtering on Windows Server 2016

How to Configure Windows Server 2016 Group Policy Security Filtering Group Policy Security Filtering lets you control precisely which users and computers receive the settings in a GPO, without needing separate OUs for each subset. By modifying the Access Control List (ACL) of a GPO, you can grant or deny the Apply Group Policy permission […]

Read more
Oracle Linux 8 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-4058)

🟠 High   ⏱ 15–60 min  Last verified: 23 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4058 Related CVEs: CVE-2023-33170 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Ubuntu 18.04 — node-bl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — node-bl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 October 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5098-1 Related CVEs: CVE-2020-8244 Upstream summary: It was discovered that bl didn't properly sanitize the inputs. An attacker could use this to leak sensitive information. Table of contents Symptom & […]

Read more
Common Problems 121462

Debian 9 – APT Lock Contention Blocks Security Updates – Safe Recovery

🟠 High   ⏱ 5–30 min  Last verified: 23 October 2020 Affected versions: Debian 9 📖 ~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 & […]

Read more
Common Problems 117542

Ubuntu 20.04 LTS rsyslog Queue Backlog Delays Alerts

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 2020 Affected versions: 20.04 LTS 📖 ~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 & […]

Read more
How to Perform a CIS Benchmark Audit on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Perform a CIS Benchmark Audit on Oracle Linux 8

Introduction Setting up perform a cis benchmark audit on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Perform a CIS Benchmark Audit on Oracle Linux 8, with all the commands you need, the SELinux and firewalld […]

Read more
Common Problems 112613

Windows Server 2019 — TLS cipher suite hardening breaks legacy API integrations on internal services — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 2020 Affected versions: Windows Server 2019 📖 ~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 […]

Read more
Common Problems 112450

Windows Server 2019 Storage Deduplication Jobs Saturating CPU and Starving Workloads – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 2020 Affected versions: Windows Server 2019 📖 ~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 […]

Read more
Oracle Linux 8 — lz4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — lz4 — vulnerability — patch and remediation guide (ELSA-2025-11035)

🟡 Medium   ⏱ 10–30 min  Last verified: 23 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-11035 Related CVEs: CVE-2019-17543 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Oracle Linux 8 — mod_auth_openidc:2.3 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mod_auth_openidc:2.3 — security and stability fixes — required update (ELSA-2023-6940)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6940 Related CVEs: CVE-2022-23527 CVE-2023-28625 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
CHAT