2020 - Page 216 of 735

How to Use Performance Monitor on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Use Performance Monitor on Windows Server 2012 R2

How to Use Performance Monitor on Windows Server 2012 R2 Performance Monitor (perfmon.exe) is the primary built-in tool on Windows Server 2012 R2 for collecting, graphing, and analyzing system performance data. It provides real-time monitoring of hundreds of performance counters spanning CPU utilization, memory consumption, disk I/O, network throughput, and application-specific metrics. More importantly, Performance […]

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Ubuntu 20.04 — spamassassin — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — spamassassin — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 September 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4899-1 Related CVEs: CVE-2020-1946 Upstream summary: Damian Lukowski discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were tricked into using a specially- crafted CF […]

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Gentoo Linux — net-libs/zeromq — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-libs/zeromq — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202009-12 Related CVEs: CVE-2020-15166 Upstream summary: It was discovered that ZeroMQ does not properly handle connecting peers before a handshake is completed. Table of contents Symptom & Impact Environment & Reproduction Root […]

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OpenBSD 7.4 — bgpd — errata 017_bgpd — reliability fix — syspatch and remediation — diagnosis and fix on OpenBSD 7.4

OpenBSD 7.4 — bgpd — errata 017_bgpd — reliability fix — syspatch and remediation

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.4 📖 ~4 min read  •  Source: OpenBSD 7.4 errata 017_bgpd Errata topic: Reliability: bgpd (All architectures) Issued: June 26, 2024 Upstream summary: Repair a withdraw desyncronization problem in bgpd(8). Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Install PHP 7.4 CLI on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install PHP 7.4 CLI on Debian 10

Introduction How to Install PHP 7.4 CLI 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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How To Set Up a Firewall Using FirewallD on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Firewall Using FirewallD on CentOS 7

Firewalld is a complete firewall solution available by default on CentOS and Fedora servers. In this guide, we will cover how to set up a basic firewall for your server and show you how to manage the firewall with firewall-cmd, its command-line administrative interface.

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