July 2021 - Page 22 of 64

How to Configure pf Packet Filtering on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure pf Packet Filtering on FreeBSD 13

Introduction How to Configure pf Packet Filtering on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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FreeBSD 13 — lrzsz — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — lrzsz — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: lrzsz — Integer overflow in zmodem, crash and information leak Related CVEs: CVE-2018-10195 Upstream summary: [email protected] reports: Lrzsz has an integer overflow vulernability in the src/zm.c:zsdata() function. An attacker could […]

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Inheritance in Java Example — step-by-step Programming tutorial on Progressive Robot

Inheritance in Java Example

URL: https://www.progressiverobot.com/inheritance-java-example/ Inheritance in java is one of the core concepts of Object-Oriented Programming. Java Inheritance is used when we have is-a relationship between objects. Inheritance in Java is implemented using extends keyword. Inheritance in Java Inheritance in Java is the method to create a hierarchy between classes by inheriting from other classes. Java Inheritance […]

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AlmaLinux 8 — libqmi — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libqmi — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:1994 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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FreeBSD 13 — netscape-communicator — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — netscape-communicator — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libpng stack-based buffer overflow and other code concerns Related CVEs: CVE-2004-0597 CVE-2004-0598 CVE-2004-0599 Upstream summary: Chris Evans has discovered multiple vulnerabilities in libpng, which can be exploited by malicious people […]

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FreeBSD 12 — py310-httpx — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py310-httpx — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 July 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-httpx — input validation vulnerability Related CVEs: CVE-2021-41945 Upstream summary: lebr0nli reports: Encode OSS httpx <=1.0.0.beta0 is affected by improper input validation in `httpx.URL`, `httpx.Client` and some functions using `httpx.URL.copy_with`. […]

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AlmaLinux 8 — woff2 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — woff2 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:1586 Related CVEs: CVE-2019-13012 CVE-2020-13543 CVE-2020-13584 CVE-2020-16125 CVE-2020-9948 CVE-2020-9951 CVE-2020-9983 CVE-2021-1817  +4 more Upstream summary: GNOME is the default desktop environment of AlmaLinux. The following packages have been upgraded to a later […]

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How to Install Docker Compose on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Docker Compose on RHEL 8

Docker Compose lets you define and run multi-container applications from a single YAML file, eliminating the need to string together long docker run commands. On RHEL 8, you can install it either as a plugin that integrates directly with the docker CLI (the modern approach) or as a standalone binary for environments that require a […]

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How To Set Up Gmail with Your Domain on the cloud provider — step-by-step DevOps tutorial on Progressive Robot

How To Set Up Gmail with Your Domain on the cloud provider

One way to send and receive email through your own custom domain is to use a third-party mail service, such as the mail service included with Google Apps (Gmail) or Zoho. The main benefit of using a third-party mail service, as opposed to managing your own mail server, is that you can avoid performing the ongoing maintenance that running a mail server entails. This tutorial will show you how to set up Gmail with your own domain that is managed by the cloud provider’s Domain Name Servers.

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