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17%
SSH Administration – Windows in a Unix World
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Gino Santa Maria, 123RF.com
saved in /home/khess/.ssh/id_rsa.pub. 09 the key fingerprint is: 10 6d:2c:04:dd:bf:b2:de:e1:fc:52:e9:7f:59:10:98:bb khess@windows 11 The key's randomart image is: 12 +--[ RSA 2048]----+ 13 | .. . o
17%
Server virtualization with VirtualBox
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Federico Caputo, 123RF.com
. To set up mod_ssl, check out the Ubuntu Server Guide [6]; otherwise, you can secure the connection to the web server with some other encryption technology, such as over a VPN. In this case, you should
17%
Proactive threat detection
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © dunord, 123RF.com
, the priority that applies to events that match a specific rule in Falco must be defined. From an admin's perspective, the fields for conditions, outputs [6], and priority are of particular interest. Listing 1
17%
Aggregate alerts from various monitoring systems
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © Chittima Kasa, 123RF.com
of the failure. Nagios and M/Monit are just two examples of how Alerta can be used in combination with other tools. The documentation [6] has a long list of compatible providers and software projects under
17%
Bare metal lifecycle management with six open source tools
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Beth Macdonald on Unsplash
Bifrost [5] (bye-frost) also has a fairly specific area of application and is now mostly rolled out as part of an OpenStack installation with Kayobe [6]. If you hear the word OpenStack and immediately feel
17%
Testing Disaster Recovery Plans with Chaos Engineering
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Photo by Mark Timberlake on Unsplash
from the LitmusChaos Hub [6]. Developers or providers can exchange their Chaos testing configurations on the platform. As of July 2025, more than 50 different predefined experiment configurations were
17%
Virtualize Browsers, Apps, and Desktops
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Lead Image © denis cristo, 123RF.com
that are based on Coturn [6], another open source project that implements a free STUN and TURN server. In the following examples, I stick to ICE Lite mode and assume that clients can reach the server's UDP ports
17%
Manage VMs and Containers with Harvester
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Lead Image © Lightwise, 123RF.com
some trial and error, also worked in my environment. The provider's developers have apparently renamed a few variables between earlier versions and the current version 1.6, which is not immediately clear
17%
Isolating Containers from Container Attacks
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Photo by Patrick Humm on Unsplash
on the system, the larger the attack surface. Specialized operating systems such as Amazon's Bottlerocket [4], Talos Linux [5], or Flatcar Container Linux [6] were specifically developed for running containers
17%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
are in place. If necessary, it will issue an error message and quit. Listing 6 contains a validate function that would work for Asterisk – apart from the sipuri section, this function is very generic, so you

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