IT, Cloud & DevOps Blog

Servlet Upload File and Download File Example — step-by-step Programming tutorial on Progressive Robot

Servlet Upload File and Download File Example

URL: https://www.progressiverobot.com/servlet-upload-file-download-example/ Servlet Upload File and Download File is a common task in [java web application](/community/tutorials/java-web-application-tutorial-for-beginners "Java Web Application Tutorial for Beginners"). Since I have written a lot about [java servlet](/community/tutorials/servlet-jsp-tutorial "Java Servlet Tutorial with Examples for Beginners") recently, I thought to provide a sample example of servlet file upload to server and then download […]

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FreeBSD 12 — netqmail-mysql — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — netqmail-mysql — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: qmail — 64 bit integer overflows with possible remote code execution on large SMTP requests Related CVEs: CVE-2005-1513 CVE-2005-1514 CVE-2005-1515 Upstream summary: Georgi Guninski writes: There are several issues with […]

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How to Configure Windows Server 2019 Scheduled Tasks — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 Scheduled Tasks

How to Configure Windows Server 2019 Scheduled Tasks Scheduled Tasks in Windows Server 2019 allow administrators to automate scripts, programs, and maintenance operations at specified times or in response to system events. The Windows Task Scheduler service manages task execution, supports complex trigger conditions, handles security contexts for running tasks, and provides logging of task […]

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How To Set Up a Basic Iptables Firewall on Centos 6 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Basic Iptables Firewall on Centos 6

This article will show how to create a simple firewall on a Centos VPS. It will only open up ports that we want and close up other services. We’ll also demonstrate how to prevent simpler attacks, and how to let yourself back in to the VPS if you deny access to yourself by accident.

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SLES 15 — yast2-multipath — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — yast2-multipath — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 November 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:3231-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-17955 Upstream summary: In yast2-multipath before version 4.1.1 a static temporary filename allows local attackers to overwrite files on systems without symlink protection Table of […]

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How to Manage Logs with Graylog 2 on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How to Manage Logs with Graylog 2 on Ubuntu 16.04

Graylog is a powerful open source log management platform. It aggregates and extracts important data from server logs, which are often sent using the syslog protocol. It also allows you to search and visualize the logs in a web interface. In this…

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Oracle Linux 8 — python-pip — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-pip — vulnerability — patch and remediation guide (ELSA-2020-4432)

🟡 Medium   ⏱ 10–30 min  Last verified: 12 November 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4432 Related CVEs: CVE-2019-20916 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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Arch Linux — wireshark-qt — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — wireshark-qt — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201805-25 Related CVEs: CVE-2018-11362 CVE-2018-11361 CVE-2018-11360 CVE-2018-11359 CVE-2018-11358 CVE-2018-11357 CVE-2018-11356 CVE-2018-11355  +6 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 2.6.0-1. Fixed in: 2.6.1-1. Group: AVG-708. Table of contents […]

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How to Install and Configure SonarQube on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure SonarQube on RHEL 7

How to Install and Configure SonarQube on RHEL 7 SonarQube is an open-source platform for continuous code quality inspection and static analysis. It detects bugs, vulnerabilities, code smells, and security hotspots across dozens of programming languages, integrating naturally into CI/CD pipelines to enforce quality gates before code reaches production. On RHEL 7, setting up SonarQube […]

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Установка Python 3 и создание среды программирования в Ubuntu 18.04. [Краткое руководство]. — step-by-step Linux tutorial on Progressive Robot

Установка Python 3 и создание среды программирования в Ubuntu 18.04. [Краткое руководство].

Python — гибкий и универсальный язык программирования, хорошо подходящий для создания скриптов, автоматизации, анализа данных, машинного обучения и разработки серверной части приложений. В этом обучающем модуле вы научитесь устанавливать Python и создавать среду…

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