How to Use SSH to Connect to a Remote Server (Step-by-Step Guide)
Learn how to use SSH to securely connect to a remote server. This step-by-step guide covers setup, syntax, key auth, troubleshooting, and best practices.
FreeBSD 12 — ko-openoffice — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 2 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: openoffice — DOC document heap overflow vulnerability Related CVEs: CVE-2004-0752 CVE-2005-0941 Upstream summary: AD-LAB reports that a heap-based buffer overflow vulnerability exists in OpenOffice's handling of DOC documents. When reading […]
How To Set Up an OpenVPN Server on Ubuntu 14.04
OpenVPN is a full-featured open source Secure Socket Layer (SSL) VPN solution that accommodates a wide range of configurations. In this tutorial, we’ll set up an OpenVPN server on a Droplet and then configure access to it from Windows, OS X, iOS and Android. This tutorial will keep the installation and configuration steps as simple as possible for these setups.
FreeBSD 12 — apache22-worker-mpm — multiple vulnerabilities (13 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 2 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: apache22 — chunk header parsing defect Related CVEs: CVE-2012-0833 CVE-2012-2687 CVE-2012-3499 CVE-2012-4558 CVE-2013-1862 CVE-2013-1896 CVE-2013-5704 CVE-2013-6438 +5 more Upstream summary: Apache Foundation reports: CVE-2015-3183 core: Fix chunk header parsing defect. […]
How To Migrate Linux Servers Part 2 – Transfer Core Data
In the previous tutorial, we prepped our servers for data migration. At this point, your target and source system should be able to communicate (the target system should have SSH access to the source system), and you should also have a list of software and services that you need to transfer, complete with version numbers of the most important components. In this guide, we’ll continue where we left off and begin the actual migration to our new server.
Arch Linux — zlib — vulnerability — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202204-3 Related CVEs: CVE-2018-25032 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1:1.2.11-1. Fixed in: 1:1.2.12-1. Group: AVG-2657. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
How to Configure StrongSwan IPsec on Debian 9
Introduction How to Configure StrongSwan IPsec on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. This […]
How To Install and Use CFEngine Community Edition on Ubuntu 20.04
CFEngine is a scalable configuration management tool for your IT infrastructure. CFEngine allows you to use the same tool and policy language to manage everything in your infrastructure: Linux, Mac, Windows, BSD, Solaris, IBM AIX, HP-UX, and others. In this tutorial, you will install CFEngine Community Edition 3.21 on Ubuntu 20.04, write sample policy files, and automate your policy runs.
FreeBSD 12 — apache+mod_ssl+mod_deflate+ipv — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 2 May 2020 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: apache — Prevent chunk-size integer overflow on platforms where sizeof(int) < sizeof(long) Related CVEs: CVE-2005-2088 CVE-2005-3352 CVE-2006-3747 Upstream summary: Apache ChangeLog reports: Integer overflow in the ap_proxy_send_fb function in proxy/proxy_util.c […]
How To Add ngx_pagespeed Module to Nginx in Debian Wheezy
In this tutorial, you are going to add ngx_pagespeed module to nginx by building it from Debian wheezy backport source, because Debian backports repository has a more recent nginx version than the stable repository, which is at the time of writing this tutorial version 1.4.4.
