Linux

How to Set Up Squid Proxy for Private Connections on Rocky Linux 9 — step-by-step Linux tutorial on Progressive Robot

How to Set Up Squid Proxy for Private Connections on Rocky Linux 9

  • July 22, 2022
  • Linux
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Proxy servers are a useful way of caching or obfuscating web traffic. This means that web requests can be served from different inbound or outbound addresses than they appear to be, by offloading the connection to intermediaries. For regular end users, this usually means allowing you to make web requests from a different IP address than your own. Squid is a stable, popular, open-source HTTP proxy. In this tutorial, you will be installing and configuring Squid to provide an HTTP proxy on Rocky.

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

Debian 11 — ecdsautils — vulnerability — patch and remediation guide

  • July 22, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 22 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-24884 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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Ubuntu 18.04 — kicad — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — kicad — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • July 22, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 22 July 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7466-1 Related CVEs: CVE-2022-23803 CVE-2022-23804 CVE-2022-23946 CVE-2022-23947 Upstream summary: It was discovered that KiCad incorrectly handled memory when opening malicious files. An attacker could possibly use this issue to cause […]

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How To Secure Apache with Let's Encrypt on Debian 11 — step-by-step Linux tutorial on Progressive Robot

How To Secure Apache with Let’s Encrypt on Debian 11

  • July 22, 2022
  • Linux
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Let’s Encrypt is a Certificate Authority (CA) that provides an easy way to obtain and install free TLS/SSL certificates, thereby enabling encrypted HTTPS on web servers. In this tutorial, you will use Certbot to obtain a free SSL certificate for Apache on Debian 11 and set up your certificate to renew automatically.

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Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide (ELSA-2022-9955)

  • July 22, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 22 July 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9955 Related CVEs: CVE-2022-21628 CVE-2022-21624 CVE-2022-35256 CVE-2022-32214 CVE-2022-21626 CVE-2022-21619 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Configure Nginx as a TCP/UDP Load Balancer on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 11 (DEBIAN-11-2)

  • July 22, 2022
  • Linux
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Introduction Deploying configure nginx as a tcp/udp load balancer on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]

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Oracle Linux 8 — container-tools:3.0 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — container-tools:3.0 — security and stability fixes — required update (ELSA-2022-1793)

  • July 21, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1793 Related CVEs: CVE-2022-27650 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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Common Problems 120464

Debian 11 APT Lock Contention During Package Operations

  • July 21, 2022
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 21 July 2022 Affected versions: Debian 11 📖 ~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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Common Problems 116951

Ubuntu 22.04 LTS – NetworkManager and netplan renderer mismatch causes interface issues – Fix & Prevention

  • July 21, 2022
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 21 July 2022 Affected versions: Ubuntu 22.04 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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AlmaLinux 8 — targetcli — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — targetcli — vulnerability — patch and remediation guide

  • July 21, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1867 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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