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today have been in development for years, and some excellent solutions have been produced. The OpenNebula framework [1] that I will look at in this article is probably the most popular framework for data ... The OpenNebula toolkit can provide powerful management and provisioning capabilities for virtualized data center operation. ... OpenNebula ... Open source data center virtualization with OpenNebula

For most Linux admins, it is a matter of course to type /etc/init.d/ and then press the Tab key to start or stop a service. On (Open)Solaris, this is handled by the Service Management Facility (SMF ... Linux and OpenSolaris have a number of differences. For example, OpenSolaris uses a version of the legacy System V Init to start and stop system services automatically. ... OpenSolaris SMF ... Service Management Facility (SMF) in OpenSolaris

VServer [1], OpenVZ [2], or Virtuozzo [3]. Benefits Hypervisor-based virtualization solutions emulate a complete hardware layer for the guest system. Ideally, any operating system including applications ... The virtualization technology market is currently concentrating on hypervisor-based systems, but hosting providers often use an alternative technology. Container-based solutions such as Open ... OpenVZ ... Operating system virtualization with OpenVZ

, with the help of some magic, the magician and the genie in the lamp finally made a sultan out of the boy [1]. OpenVPN and Aladdin Luckily, you don't need magic to use Aladdin e-tokens with Linux and Open ... Simple VPNs might not provide enough security alone; instead, try a carefully crafted mix of OpenVPN and Aladdin e-tokens. ... OpenVPN ... OpenVPN with e-tokens in large-scale environments

According to figures released by Open-Xchange (OX) [1], they are the leading international technology supplier for hosted groupware, with more than 24 million users. Customers of Internet provider 1 ... The latest release of Open-Xchange collaboration server includes new interfaces, such as MAPI support for Outlook and the ability to connect to mobile devices. In this article, we look at the new ... Open-Xchange ... The latest developments in Open-Xchange 6.20

OpenNMS is known for its excellent scalability, but it is also characterized by its open interfaces and a variety of standard tools that can be used to monitor the status of services like HTTP, SMTP ... The OpenNMS monitoring tool is a kind of all-purpose weapon that can provide administrators with a versatile range of information. ... OpenNMS

OpenSolaris, like Linux, is an ambitious open source kernel and operating system project that provides an excellent platform for building and running applications. Originally created and maintained ... Linux users take note of the power of OpenSolaris's built-in virtualization, which is free, easy to use, and extremely efficient. ... OpenSolaris

investigate your own IT landscape and implement corresponding measures. A popular tool in the open source world for this task is Verinice [2] by SerNet GmbH, Göttingen, Germany. Verinice is an Information ... Testing the system landscape for compliance requirements is not typically an administrator's favorite task. The fairly new open source framework called OpenSCAP helps take some of the pain out ... Admin Story: OpenSCAP ... Security compliance with OpenSCAP

and maintained only by Red Hat. In more recent versions (e.g., 2.0 in RHEL 5 and Fedora Core 6 or later), the legacy CMAN implementation was replaced by an open implementation based on the Application Interface ... Setting up high-availability cluster resources is part of the administrator's standard bag of tricks. We look at the basic setup of a cluster using the free OpenAIS/Corosync-based cluster suite. ... Clustering with OpenAIS and Corosync

, so this organization turned to an open source remote access solution, FreeNX, and the WiKID Strong Authentication System for two-factor authentication. The WiKID system [1] is a dual-source, two ... FreeNX and the WiKID Strong Authentication System combine to create open source remote access that delivers the speed of NX with the security of SSH tunnels and Linux. ... Open source remote access to Windows