Logging Monitoring

Common Problems 115415

RHEL 7 service network Restart Drops SSH Sessions

🟠 High   ⏱ 5–30 min  Last verified: 2 February 2021 Affected versions: RHEL 7 📖 ~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 Configure Node Exporter on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Node Exporter on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying configure node exporter on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Node Exporter on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

Read more
IBM AIX 7.2 — CVE-2021-29814 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2021-29814 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 2 February 2021 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2021-29814, IBM Support Bulletin CVE: CVE-2021-29814 NVD summary: IBM Jazz for Service Management 1.1.3.10 and IBM Tivoli Netcool/OMNIbus_GUI is vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript […]

Read more
Alpine Linux edge — tcpreplay — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — tcpreplay — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 4.4.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — tcpreplay 4.4.1-r0 Related CVEs: CVE-2021-45386 CVE-2021-45387 CVE-2020-24265 CVE-2020-24266 CVE-2019-8381 CVE-2019-8376 CVE-2019-8377 Upstream summary: Alpine community repository for vedge ships tcpreplay 4.4.1-r0 which addresses CVE-2021-45386. Table […]

Read more
Common Problems 113042

Windows Server 2016 — NLB cluster convergence loops after adding new node with mismatched host priority — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 February 2021 Affected versions: Windows Server 2016 📖 ~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 112524

Windows Server 2019 — Computer secure channel broken: machine cannot authenticate to domain — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 February 2021 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
Ubuntu 16.04 — libdbi-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libdbi-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 February 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5030-2 Related CVEs: CVE-2014-10402 CVE-2020-14393 CVE-2019-20919 CVE-2020-14392 Upstream summary: USN-5030-1 addressed vulnerabilities in Perl DBI module. This update provides the corresponding updates for Ubuntu 16.04 ESM. Original advisory details: It […]

Read more
Ubuntu 16.04 — gegl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — gegl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 February 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5251-1 Related CVEs: CVE-2021-45463 Upstream summary: It was discovered that GEGL incorrectly filtered and escaped file path input data when using the C system() function for execution of the ImageMagick […]

Read more
How to Mount NFS Shares at Boot on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Mount NFS Shares at Boot on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up mount nfs shares at boot on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

Read more
openSUSE Tumbleweed — hylafax+ — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — hylafax+ — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:2797-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-17141 CVE-2020-15396 CVE-2020-15397 CVE-2020-8024 Upstream summary: HylaFAX 6.0.6 and HylaFAX+ 5.6.0 allow remote attackers to execute arbitrary code via a dial-in session that provides a […]

Read more
CHAT