Introduction How to Install and Configure BIND9 DNS Server on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf […]
How to Set Up Zabbix Agent on Windows Server 2012 R2 Zabbix is a mature, enterprise-grade open-source monitoring platform that provides agent-based and agentless monitoring with built-in alerting, trending, dashboards, and auto-discovery. The Zabbix Agent 2 provides active and passive check modes, native Windows performance counter collection, event log monitoring, process monitoring, and support for […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2LIVEPATCH-2021-039 Related CVEs: CVE-2021-3347 CVE-2020-28374 Upstream summary: A flaw was found in the Linux kernel. A use-after-free memory flaw in the Fast Userspace Mutexes functionality allowing a local user to […]
DRBD (Distributed Replicated Block Device) provides synchronous, block-level replication between two Linux servers, making it a foundational technology for high-availability storage clusters. Often described as “RAID 1 over the network,” DRBD mirrors every write to both nodes in real time, so either node can take over if the other fails. On RHEL 8, DRBD is […]
🟡 Medium ⏱ 5–30 min Last verified: 17 August 2021 📖 ~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 & Cross-Refs References & Further […]
How to Set Up Windows Server 2019 Group Policy Modelling Group Policy Modelling (also known as Resultant Set of Policy — Planning Mode) is a powerful analysis tool built into the Group Policy Management Console that predicts what Group Policy settings would apply to a user or computer given a specific set of conditions. Rather […]
🟠 High ⏱ 15–60 min Last verified: 16 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2020-3010 Related CVEs: CVE-2019-19807 CVE-2020-10757 CVE-2020-10766 CVE-2020-10767 CVE-2020-10768 CVE-2019-3016 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
How to Set Up Microsoft Deployment Toolkit (MDT) on Windows Server 2012 R2 Microsoft Deployment Toolkit (MDT) is a free Microsoft solution that extends Windows Deployment Services to provide a fully automated, zero-touch operating system and application deployment framework. MDT uses task sequences — ordered lists of steps — to deploy Windows, install applications, apply […]
How to Configure Just Enough Administration (JEA) on Windows Server 2012 R2 Just Enough Administration (JEA) is a PowerShell-based delegated administration framework that allows you to grant granular, role-based administrative access without giving users full Administrator privileges. With JEA, you can define exactly which PowerShell commands a user can run, what parameters they can pass, […]
How to Configure Windows Server 2019 DCB Data Center Bridging (DCB) is a suite of IEEE standards that enhance standard Ethernet to provide the reliability and traffic management required by converged data center networks. DCB enables multiple traffic types — including Fibre Channel over Ethernet (FCoE), iSCSI, RDMA (RoCE), and standard Ethernet — to coexist […]
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