How to Install and Configure Apache Tomcat on Windows Server 2022 Apache Tomcat is the de-facto Java Servlet container for deploying Java web applications on Windows Server. It supports the Jakarta EE (formerly Java EE) Servlet and JSP specifications and is widely used to host Spring Boot applications, REST APIs, and legacy J2EE WAR files. […]
🟠 High ⏱ 5–30 min Last verified: 3 December 2022 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]
Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure network time protocol with chrony on IBM AIX […]
🟠 High ⏱ 5–30 min Last verified: 3 December 2022 Affected versions: Windows Server 2022 📖 ~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 […]
Introduction This guide explains how to Set Up Dovecot IMAP Server on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]
CloudFlare is a company that provides content delivery network (CDN) and distributed DNS services by acting as a reverse proxy for websites. CloudFlare’s free and paid services can be used to improve the security, speed, and availability of a website in a variety of ways. In…
How to Set Up WebDAV in IIS on Windows Server 2022 WebDAV (Web Distributed Authoring and Versioning) extends HTTP to allow clients to read and write files on a remote web server. On Windows Server 2022 with IIS, WebDAV is a built-in feature that integrates tightly with NTFS permissions, IIS authentication, and SSL. This guide […]
Standard Linux memory pages are 4 KB, and the kernel must maintain a Translation Lookaside Buffer (TLB) entry for each mapped page. Database systems that manage large shared memory segments — such as PostgreSQL’s shared_buffers, Oracle’s SGA, or MySQL’s InnoDB buffer pool — can create millions of TLB entries, causing frequent TLB misses that significantly […]
Introduction to DHCP Server Authorisation on Windows Server 2019 DHCP Server Authorisation is an Active Directory feature that prevents rogue DHCP servers from operating in a domain environment. In a Windows domain, before a DHCP server will respond to client requests, it must verify that it is authorised in Active Directory. An unauthorised DHCP server […]
Always On VPN vs DirectAccess: Why the Upgrade Matters Always On VPN (AOVPN) is Microsoft’s modern replacement for DirectAccess, introduced with Windows 10 and Windows Server 2016. While DirectAccess provided transparent remote access using IPv6-over-IPv4 tunneling and IPsec, it was tightly coupled to Active Directory group policy, required IPv6 infrastructure, only supported domain-joined Windows Enterprise […]
