November 2020 - Page 12 of 66

Oracle Linux 8 — samba security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — samba security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-1878)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1878 Related CVEs: CVE-2019-10197 CVE-2019-14907 CVE-2019-10218 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

Read more
Common Problems 121511

Debian 9 – Network Interface Rename Breaks Connectivity – Persistent Naming Fix

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

Read more
Common Problems 114514

Time Drift on RHEL 9 with chronyd

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 […]

Read more
Common Problems 113941

RHEL 10 – firewalld default zone blocking application port access – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 10 📖 ~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 & […]

Read more
How to Configure SNMP Traps on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure SNMP Traps on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure snmp traps on ibm aix 7.1 on IBM […]

Read more
How to Set Up Oracle Linux 8 in AWS — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Oracle Linux 8 in AWS

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying set up oracle linux 8 in aws both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Oracle Linux 8 in AWS, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

Read more
How to Use PowerShell to Manage Hyper-V on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Use PowerShell to Manage Hyper-V on Windows Server 2012 R2

How to Use PowerShell to Manage Hyper-V on Windows Server 2012 R2 PowerShell is the most powerful and efficient way to manage Hyper-V on Windows Server 2012 R2. The Hyper-V module contains over 150 cmdlets covering every aspect of virtual machine lifecycle management, virtual switch configuration, storage management, networking, replication, and host configuration. Mastering PowerShell […]

Read more
MongoDB findOne Example — step-by-step Databases tutorial on Progressive Robot

MongoDB findOne Example

URL: https://www.progressiverobot.com/mongodb-findone-example/ MongoDB findOne() method returns only one document that satisfies the [criteria](/community/tutorials/hibernate-criteria-example-tutorial) entered. If the criteria entered matches for more than one document, the method returns only one document according to natural ordering, which reflects the order in which the documents are stored in the database. MongoDB findOne ![MongoDB findOne](images/mongodb-findone-example-section-1.png) MongoDB findOne() syntax is: […]

Read more
JSP Exception Handling - JSP Error Page — step-by-step Programming tutorial on Progressive Robot

JSP Exception Handling – JSP Error Page

URL: https://www.progressiverobot.com/jsp-exception-handling-jsp-error-page/ Exception handling in JSP is done by JSP exception pages. Exception Handling in JSP Sometime back I wrote a post about [Servlet Exception Handling](/community/tutorials/servlet-exception-and-error-handling-example-tutorial "Servlet Exception and Error Handling Example Tutorial") and why do we need it. Same explanation is also applicable for JSP pages also and that's why Java EE provides a […]

Read more
CHAT