How To Create Reusable Components with NgTemplateOutlet in Angular
Learn how to use NgTemplateOutlet and structural directives to make more general reusable components.
How to Install Zabbix on RHEL 8
Zabbix is a mature, enterprise-grade open-source monitoring platform capable of tracking availability, performance, and log data for thousands of hosts from a single server. It ships with auto-discovery, customizable triggers, rich alerting integrations, and a polished web interface. Installing Zabbix 6.x on RHEL 8 takes roughly thirty minutes and gives you production-ready monitoring backed by […]
Debian 9 – cron jobs stop running due to anacron or timer overlap
🟡 Medium ⏱ 5–30 min Last verified: 6 June 2019 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 & […]
Ubuntu 18.04 LTS Failed to Fetch Repository Metadata
🟡 Medium ⏱ 5–30 min Last verified: 6 June 2019 Affected versions: 18.04 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 & […]
How to Install and Configure Routing and Remote Access (RRAS) on Windows Server 2019
Introduction to Routing and Remote Access Service on Windows Server 2019 Routing and Remote Access Service (RRAS) is a built-in Windows Server 2019 feature that provides multi-protocol routing, remote access VPN, and site-to-site VPN connectivity. RRAS can function as a software router supporting RIP, OSPF (through third-party plugins), BGP, and static routes; as a dial-up […]
Windows Server 2019 — SMB signing mismatch causes slow file transfers — Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 6 June 2019 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 […]
How to Install Jenkins on Windows Server 2012 R2
How to Install Jenkins on Windows Server 2012 R2 Jenkins is one of the most widely adopted open-source automation servers in the industry, enabling organizations to build, test, and deploy software with repeatable, auditable pipelines. On Windows Server 2012 R2, Jenkins runs as a Windows service on top of the Java Runtime Environment, integrating naturally […]
Amazon Linux 2 — evince — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2020-1511 Related CVEs: CVE-2019-14494 CVE-2019-11459 Upstream summary: A divide-by-zero error was found in the way Poppler handled certain PDF files. A remote attacker could exploit this flaw by providing a […]
TypeScript Enum Declaration and Merging
Here’s a short post explaining how to create and merge Enums in TypeScript.
FreeBSD 12 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 6 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: OpenVPN — out-of-bounds write in legacy key-method 1 Related CVEs: CVE-2017-12166 CVE-2017-7478 CVE-2017-7479 CVE-2017-7508 CVE-2017-7512 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 Upstream summary: Steffan Karger reports: The bounds check in read_key() was performed […]
