February 2021 - Page 60 of 62

How To Encrypt OpenLDAP Connections Using STARTTLS — step-by-step Security tutorial on Progressive Robot

How To Encrypt OpenLDAP Connections Using STARTTLS

OpenLDAP provides an LDAP directory service that is flexible and well-supported. However, out-of-the-box, the server itself communicates over an unencrypted web connection. In this guide, we will demonstrate how to encrypt connections to OpenLDAP by configuring an LDAP…

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How to Install Xdebug for PHP on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Xdebug for PHP on RHEL 8

Xdebug is the de facto debugging and profiling extension for PHP, giving you step-by-step execution, variable inspection, stack traces, and code coverage reports. Installing it on RHEL 8 requires a few extra steps compared to other distributions because RHEL’s default PHP packages do not include Xdebug in their repos. This tutorial walks through installation from […]

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

Oracle Linux 8 — opensc security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4483)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4483 Related CVEs: CVE-2019-15946 CVE-2019-19481 CVE-2019-15945 CVE-2019-19479 CVE-2019-20792 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Common Problems 115927

systemd service enters restart loop with status=203/EXEC

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 26.04 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 […]

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Debian 10 — uriparser — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — uriparser — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-46141 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Java DataSource, JDBC DataSource Example — step-by-step Programming tutorial on Progressive Robot

Java DataSource, JDBC DataSource Example

URL: https://www.progressiverobot.com/java-datasource-jdbc-datasource-example/ Java DataSource and JDBC DataSource programming is the way to work with database in our java programs. We have already seen that [JDBC DriverManager](/community/tutorials/jdbc-example-mysql-oracle "JDBC Example Tutorial – Drivers, Connection, Statement and ResultSet") can be used to get relational database connections. But when it comes to actual programming, we want more than just […]

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How to Set Up IPsec VPN with Libreswan on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up IPsec VPN with Libreswan on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying set up ipsec vpn with libreswan on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up IPsec VPN with Libreswan on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, […]

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