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Como listar e excluir regras de firewall do Iptables — step-by-step Security tutorial on Progressive Robot

Como listar e excluir regras de firewall do Iptables

O Iptables é uma tecnologia de firewall que desempenha um papel essencial na segurança de rede para vários sistemas Linux. Neste tutorial vamos mostrar como executar as seguintes tarefas do iptables: listar regras, zerar contadores de pacotes e de bytes, excluir regras, esvaziar cadeias (excluir todas as regras em uma cadeia) e redefinir completamente um firewall iptables.

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How To Install and Configure VNC on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure VNC on Ubuntu 14.04

VNC is a connection system that allows you to manage your Ubuntu server with a graphical desktop environment. With VNC, you can use your keyboard and mouse to interact with a graphical display of your remote server, making it easier to work with the server.

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Android ProgressBar using Kotlin — step-by-step DevOps tutorial on Progressive Robot

Android ProgressBar using Kotlin

In this tutorial, we'll discuss and implement ProgressBar in our Android Application using Kotlin. What is a ProgressBar? ProgressBar UI element is used to display the Progress on the app screen. We can use a ProgressBar to show the download/upload progress on the app screen. Progress Bar Types There are two types of Progress Bar. […]

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How to Set Up IBM HTTP Server on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Set Up IBM HTTP Server on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up ibm http server on ibm aix 7.2 […]

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Struts Tutorial for Beginners — step-by-step DevOps tutorial on Progressive Robot

Struts Tutorial for Beginners

URL: https://www.progressiverobot.com/struts-tutorial-for-beginners/ Welcome to Struts Tutorial for Beginners. Struts is one of the oldest frameworks to build [Java Web Application](/community/tutorials/java-web-application-tutorial-for-beginners "Java Web Application Tutorial for Beginners"). Struts Tutorial ![struts tutorial, struts 2, struts 2 tutorial, struts2](images/struts-tutorial-for-beginners-section-1.png) Struts was the initial implementation of MVC design pattern and it has evolved a lot along with latest enhancements […]

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FreeBSD 12 — ruby24-gems — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ruby24-gems — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: RubyGems — multiple vulnerabilities Related CVEs: CVE-2017-0903 CVE-2019-8320 CVE-2019-8321 CVE-2019-8322 CVE-2019-8323 CVE-2019-8324 CVE-2019-8325 Upstream summary: RubyGems Security Advisories: CVE-2019-8320: Delete directory using symlink when decompressing tar CVE-2019-8321: Escape sequence injection […]

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Commands for Process Management in Linux — step-by-step Linux tutorial on Progressive Robot

Commands for Process Management in Linux

URL: https://www.progressiverobot.com/process-management-in-linux/ In this article, we'll discuss process management in Linux. A process in Linux is nothing but a program in execution. It’s a running instance of a program. Any command that you execute starts a process. Types of Processes in Linux In Linux processes can be of two types: depend on the user for […]

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openSUSE Tumbleweed — mysql-workbench — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — mysql-workbench — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2017-3469 Upstream summary: Vulnerability in the MySQL Workbench component of Oracle MySQL (subcomponent: Workbench: Security : Encryption). Supported versions that are affected are 6.3.8 and […]

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FreeBSD 12 — libressl-devel — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libressl-devel — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 5 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: LibreSSL — overwrite and -read vulnerability Related CVEs: CVE-2016-2105 CVE-2016-2106 CVE-2016-2107 CVE-2016-2108 CVE-2016-2109 CVE-2016-2176 CVE-2016-2178 CVE-2016-6309  +8 more Upstream summary: The LibreSSL project reports: An incorrect length check can result […]

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ObjectOutputStream in Java - write Object to File — step-by-step Programming tutorial on Progressive Robot

ObjectOutputStream in Java – write Object to File

URL: https://www.progressiverobot.com/objectoutputstream-java-write-object-file/ ObjectOutputStream in Java can be used to convert an object to OutputStream. The process of converting object to stream is called [serialization in java](/community/tutorials/serialization-in-java). Once an object is converted to Output Stream, it can be saved to file or database, send over the network or used in socket connections. So we can use […]

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