November 2019 - Page 32 of 66

Common Problems 113575

Windows Server 2012 R2 — NLB multicast mode conflicts with upstream switch ARP handling and causes packet loss — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Set Up Mail Relay with Postfix on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up Mail Relay with Postfix on RHEL 10

Introduction Setting up set up mail relay with postfix on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Mail Relay with Postfix on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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openSUSE Tumbleweed — libodbc2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libodbc2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:1845-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-7409 CVE-2018-7485 Upstream summary: In unixODBC before 2.3.5, there is a buffer overflow in the unicode_to_ansi_copy() function in DriverManager/__info.c. Table of contents Symptom & Impact […]

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FreeBSD 12 — hlstats — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — hlstats — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: hlstats — multiple cross site scripting vulnerabilities Related CVEs: CVE-2006-4454 CVE-2006-6780 CVE-2006-6781 CVE-2007-2812 Upstream summary: Kefka reports multiple cross site scripting vulnerabilities within hlstats. The vulnerabilities are caused due to […]

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MongoDB Java CRUD Example Tutorial — step-by-step Databases tutorial on Progressive Robot

MongoDB Java CRUD Example Tutorial

URL: https://www.progressiverobot.com/mongodb-java-crud-example-tutorial/ Welcome to MongoDB Java Example Tutorial. Earlier we learned [how to install MongoDB in Unix machines](/community/tutorials/install-mongodb-linux "How to install MongoDB on Unix/Linux Systems") and executed some commands from terminal. Today we will look into the MongoDB Java Driver features and how to perform common CRUD (Create, Read, Update, Delete) operations. MongoDB Java ![mongodb […]

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How To Set Up a Deis Cluster on the cloud provider — step-by-step DevOps tutorial on Progressive Robot

How To Set Up a Deis Cluster on the cloud provider

Deis is an open source private Platform as a Service (PaaS) that simplifies deploying and managing your applications on your own servers. By leveraging technologies such as Docker and CoreOS, Deis provides a workflow and scaling features that are similar to that of Heroku, on…

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How to Tune PostgreSQL Performance on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Tune PostgreSQL Performance on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying tune postgresql performance both straightforward and auditable. This tutorial covers the complete procedure for how to Tune PostgreSQL Performance on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites The procedure assumes […]

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SLES 15 — libthai0 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libthai0 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2010:002 (see also SUSE bugzilla) Related CVEs: CVE-2009-4012 Upstream summary: Multiple integer overflows in LibThai before 0.1.13 might allow context-dependent attackers to execute arbitrary code via long strings that trigger heap-based buffer […]

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How To Install Linux, Nginx, MySQL, PHP (LEMP) Stack on Debian 7 — step-by-step Linux tutorial on Progressive Robot

How To Install Linux, Nginx, MySQL, PHP (LEMP) Stack on Debian 7

LEMP stack is a group of open source software to get a VPS up and running. The acronym includes the Linux (L), MySQL (M), and PHP (P) of the more traditional LAMP stack, but switches out Apache for Nginx (pronounced engine x). This tutorial explains how to install nginx/MySQL/PHP-fpm, as well as all the required repos to download nginx and php-fp. It will also review how to configure php & nginx, as well as how to create a php info page. *Written for Debian 7.

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