Troubleshooting

How to Configure a Distributed Firewall with SDN on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure a Distributed Firewall with SDN on Windows Server 2016

How to Configure Windows Server 2016 Distributed Firewall The Distributed Firewall in Windows Server 2016 SDN is a stateful, policy-driven firewall that enforces network access controls at the virtual machine vNIC level, directly within the Hyper-V Virtual Switch on each host. Unlike traditional perimeter firewalls that inspect traffic at a single point, the Distributed Firewall […]

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How to Set Up Kubernetes Ingress with Nginx Ingress Controller on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Kubernetes Ingress with Nginx Ingress Controller on RHEL 7

How to Set Up Kubernetes Ingress with Nginx Ingress Controller on RHEL 7 Kubernetes Ingress provides a powerful way to expose HTTP and HTTPS routes from outside the cluster to services running inside it. Rather than creating a separate LoadBalancer service for every application, an Ingress resource lets you define routing rules in one place, […]

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Debian 10 — lrzip — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — lrzip — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 November 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-5786 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Set a Hostname and FQDN on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set a Hostname and FQDN on RHEL 8

Setting a proper hostname and Fully Qualified Domain Name (FQDN) is one of the first configuration tasks on any new RHEL 8 server. A correct hostname ensures that system logs, email delivery, and network services identify your machine accurately. On RHEL 8, hostnamectl from systemd provides a clean, persistent way to manage hostname settings without […]

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Common Problems 113575

Windows Server 2012 R2 — NLB multicast mode conflicts with upstream switch ARP handling and causes packet loss — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 November 2019 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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openSUSE Tumbleweed — mpv — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — mpv — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2018-6360 Upstream summary: mpv through 0.28.0 allows remote attackers to execute arbitrary code via a crafted web site, because it reads HTML documents containing VIDEO […]

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FreeBSD 12 — hlstats — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — hlstats — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 16 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: hlstats — multiple cross site scripting vulnerabilities Related CVEs: CVE-2006-4454 CVE-2006-6780 CVE-2006-6781 CVE-2007-2812 Upstream summary: Kefka reports multiple cross site scripting vulnerabilities within hlstats. The vulnerabilities are caused due to […]

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SLES 15 — libthai0 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libthai0 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 16 November 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2010:002 (see also SUSE bugzilla) Related CVEs: CVE-2009-4012 Upstream summary: Multiple integer overflows in LibThai before 0.1.13 might allow context-dependent attackers to execute arbitrary code via long strings that trigger heap-based buffer […]

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IBM AIX 7.2 — CVE-2019-4193 — information disclosure — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2019-4193 — information disclosure — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 16 November 2019 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2019-4193, IBM Support Bulletin CVE: CVE-2019-4193 NVD summary: IBM Jazz for Service Management 1.1.3 and 1.1.3.2 stores sensitive information in URL parameters. This may lead to information disclosure if unauthorized parties have […]

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openSUSE Tumbleweed — libodbc2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libodbc2 — multiple vulnerabilities (2 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-2018:1845-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-7409 CVE-2018-7485 Upstream summary: In unixODBC before 2.3.5, there is a buffer overflow in the unicode_to_ansi_copy() function in DriverManager/__info.c. Table of contents Symptom & Impact […]

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