August 2020 - Page 44 of 69

How to Configure Bacula Backup Server on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Bacula Backup Server on Debian 10

Introduction How to Configure Bacula Backup Server on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]

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Ubuntu 20.04でOpenVPNサーバーをセットアップ・設定する方法 — step-by-step Linux tutorial on Progressive Robot

Ubuntu 20.04でOpenVPNサーバーをセットアップ・設定する方法

OpenVPNは、公開インターネット上でプライベートネットワークを安全に構築したり参加したりできるようにするオープンソースの仮想プライベートネットワーク(Virtual Private Network: VPN)アプリケーションです。  このチュートリアルでは、Ellipic Curve Cryptography(ECC)を使用して、Ubuntu 20.04 (Focal server)にOpenVPNをインストールして設定する方法を学びます。  また、Windows、macOS、iOS、Android、LinuxクライアントをVPNに接続する方法も学びます。

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How To Set Up a Help Desk System with OTRS on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Help Desk System with OTRS on Ubuntu 18.04

OTRS, also known as the Open source Ticket Request System, is a help desk and IT service management system. In this tutorial, you will install OTRS Community Edition on an Ubuntu 18.04 server and set up a simple help desk system, which will allow you to receive and process requests from your customers using both the web interface and email.

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Oracle Linux 8 — freetype — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — freetype — vulnerability — patch and remediation guide (ELSA-2020-4952)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4952 Related CVEs: CVE-2020-15999 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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How to Configure iptables Firewall Rules on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure iptables Firewall Rules on RHEL 9

iptables has been the standard Linux packet-filtering firewall for over two decades, and while RHEL 9 ships with nftables and firewalld as the preferred tools, iptables remains available and is widely understood by seasoned administrators. Learning iptables gives you deep insight into how Linux netfilter works and is valuable for managing legacy systems or containers […]

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