January 2023 - Page 71 of 72

How to Configure Network Policy Server (NPS) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Network Policy Server (NPS) on Windows Server 2012 R2

How to Configure Network Policy Server (NPS) on Windows Server 2012 R2 Network Policy Server (NPS) is the Microsoft implementation of a RADIUS (Remote Authentication Dial-In User Service) server on Windows Server 2012 R2. NPS centralizes authentication, authorization, and accounting for network access, including VPN connections, wireless access points, 802.1X wired authentication, and dial-up connections. […]

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Debian 11 — x265 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — x265 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-13135 Upstream summary: A NULL Pointer Dereference exists in VideoLAN x265, as used in libbpg 0.9.7 and other products, because the CUData::initialize function in common/cudata.cpp mishandles memory-allocation failure. […]

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How to use sum() in R - Find the sum of elements in R — step-by-step DevOps tutorial on Progressive Robot

How to use sum() in R – Find the sum of elements in R

URL: https://www.progressiverobot.com/sum-in-r/ Let's learn how to find the sum of the values with the help of the sum() in R. In this tutorial, we will try to find the sum of the elements of the vector. The syntax of the sum() function is = sum(x,na.rm=FALSE/TRUE) [Vector](/community/tutorials/vectors-in-r) is the easiest method to store multiple elements in […]

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How to Configure Apache2 with mod_security on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Apache2 with mod_security on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure apache2 with mod_security on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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Debian 11 — zsh — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — zsh — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-6209 CVE-2014-10070 CVE-2014-10071 CVE-2014-10072 CVE-2016-10714 CVE-2017-18205 CVE-2017-18206 CVE-2018-0502  +8 more Upstream summary: Util/difflog.pl in zsh 4.3.4 allows local users to overwrite arbitrary files via a symlink attack on […]

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How to Install Hadoop in Stand-Alone Mode on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Hadoop in Stand-Alone Mode on Ubuntu 16.04

Hadoop is a Java-based programming framework that supports the processing and storage of extremely large datasets on a cluster of inexpensive machines. It was the first major open source project in the big data playing field and is sponsored by the Apache Software Foundation. …

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Debian 11 — libproxy — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libproxy — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-4505 CVE-2012-5580 CVE-2020-25219 CVE-2020-26154 Upstream summary: Heap-based buffer overflow in the px_pac_reload function in lib/pac.c in libproxy 0.2.x and 0.3.x allows remote servers to have an unspecified impact […]

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How To Install Git on CentOS 8 — step-by-step Linux tutorial on Progressive Robot

How To Install Git on CentOS 8

In this guide, we will go through how to install and configure Git on a CentOS 8 server. We will cover how to install the software two different ways: via the built-in package manager and via source. Each of these approaches has their own benefits depending on your specific needs.

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How To Install and Configure Postfix as a Send-Only SMTP Server on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Postfix as a Send-Only SMTP Server on Ubuntu 22.04

Postfix is a mail transfer agent (MTA), an application used to send and receive email. It can be configured so that it can be used to send emails by local application only. In this tutorial, you’ll install and configure Postfix on Ubuntu 22.04 as a send-only SMTP server. You’ll also request free TLS certificates from Let’s Encrypt for your domain and encrypt the outbound emails using them.

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