June 2021 - Page 28 of 66

How to Configure Kubernetes Ingress on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Kubernetes Ingress on SLES 12

Introduction This tutorial covers How to Configure Kubernetes Ingress on SLES 12 on SLES 12. SLES 12 (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. Step 1 — Disable Swap swapoff -a sed -i ‘/ swap / […]

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Amazon Linux 2 — emr-puppet — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — emr-puppet — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2EMR-PUPPET-2023-001 Related CVEs: CVE-2021-27025 Upstream summary: A flaw was discovered in Puppet Agent where the agent may silently ignore Augeas settings or may be vulnerable to a Denial of Service […]

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Amazon Linux 2 — kernel-livepatch-4.14.243-185.433 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.243-185.433 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2021-062 Related CVEs: CVE-2021-40490 Upstream summary: No CVE associated with this advisory Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Common Problems 112902

Windows Server 2016 — Conditional forwarders timing out across site-to-site VPN links on Windows Server 2016 DNS — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 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 […]

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FreeBSD 13 — py37-tuf — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py37-tuf — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: The Update Framwork — path traversal vulnerability Related CVEs: CVE-2021-41131 Upstream summary: NVD reports: python-tuf is a Python reference implementation of The Update Framework (TUF). In both clients (`tuf/client` and […]

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FreeBSD 13 — gpdf — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — gpdf — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xpdf — multiple remote Stream.CC vulnerabilities Related CVEs: CVE-2004-0888 CVE-2004-0889 CVE-2004-1125 CVE-2005-0064 CVE-2005-2097 CVE-2007-3387 CVE-2007-4352 CVE-2007-5392  +1 more Upstream summary: Secunia Research reports: Secunia Research has discovered some vulnerabilities in […]

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FreeBSD 13 — milter-bogom — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — milter-bogom — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: milter-bogom — headerless message crash Upstream summary: Juan J. Marítnez reports: The milter crashes while processing a headerless message Impact: bogom crashes and sendmail moves it to error state Table […]

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How to Enable HTTP/2 in Nginx on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Enable HTTP/2 in Nginx on FreeBSD 13

Introduction Deploying enable http/2 in nginx on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard […]

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How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.04

In this tutorial, we will go over the installation of the Elasticsearch ELK Stack on Ubuntu 14.04—that is, Elasticsearch 2.2.x, Logstash 2.2.x, and Kibana 4.4.x. We will also show you how to configure it to gather and visualize the syslogs of your systems in a centralized location, using Filebeat 1.0.x. Logstash is an open source tool for collecting, parsing, and storing logs for future use. Kibana 4 is a web interface that can be used to search and view the logs that Logstash has indexed.

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