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Recovering from a cyberattack in a hybrid environment
30.01.2024
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Photo by Kelly Sikkema on Unsplash
federated domains from Federated to Managed (Figure 3), Connect-MGGraph -Scopes Domain.ReadWrite.All,Directory.Access-AsUser.All Get-MGDomain and proceed as follows, Update-MGDomain -DomainId
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Getting started with OpenStack
17.04.2017
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Lead Image © Sascha Burkard, 123RF.com
such as OpenContrail. OpenStack Neutron (Figure 3) bridges the gap between OpenStack and the various SDN flavors. Basically, Neutron is not much more than an API that has a plugin interface. A plugin
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Lustre HPC distributed filesystem
07.04.2022
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Photo by Efe Kurnaz on Unsplash
to which they are written. Lustre (or Linux Cluster) [1]-[3] is one such distributed filesystem, usually deployed for large-scale cluster high-performance computing (HPC). Licensed under the GNU General
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Hunt down vulnerabilities with the Metasploit pen-testing tool
28.11.2021
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Lead Image © bluebay, 123rf.com
:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh (...) reboot; Connection closed by foreign host. Metasploitable runs many more insecure services that an Nmap scan brings to light (Listing 3
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Application virtualization with Docker
08.10.2015
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Lead Image © Oleksiy Mark, 123RF.com
containers (Figure 3) – that is, completely virtualized operating systems – and application containers (Figure 4) for virtualizing a particular application, including its run-time environment. However, LXC
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Managing Storage with LVM
07.11.2023
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can save some partitions or devices for later when the requests for more space arrive. You can also create PVs and just leave them for later. Listing 1 is an example from an Ubuntu 22.04 system
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Userspace secure filesystem
30.11.2020
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Lead Image © mipan, 123RF.com
need SSH active on both systems. Almost all firewalls are set up to allow port 22 access or have mapped port 22 to a different port that can accommodate SSHFS. All the other ports can be blocked
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The top three SSH tricks
14.08.2017
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Lead Image © Fotoflash,Fotolia.com
-A INPUT -p tcp -s [IP address of allowed server] --dport 22 -j ACCEPT on the server to which you want to SSH. Trick 2: Copying Files Securely The SSH protocol also includes Secure Copy (SCP
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GlusterFS Storage Pools
17.11.2016
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. Figure 1: Client systems access the desired GlusterFS volume via a single namespace. (Red Hat CC BY-SA 3.0 [1]) When you look under the hood of GlusterFS, it is striking that the filesystem
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Desktop Blades (of Glory)
06.05.2024
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not have enough performance to make it interesting to me. Figure 1: My early Cluster HAT. Starting with the Raspberry Pi 3, the CPU was now 64 bits

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