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13%
Server virtualization with Citrix XenServer
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Goss Vitalij, Fotolia
restricted to expensive mainframes back in the 1970s have now found their way into classic x86 hardware. Multicore systems with sufficient RAM can easily run a handful of virtual server systems today
13%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
with nearly native performance. However, KVM does need a state-of-the-art CPU generation with virtualization functionality (VT-X/AMD-V). All the virtual machines in this article will run on the KVM hypervisor
13%
Securing email communication with GnuPG
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Amol Tyagi on Unsplash_Key.jpg
) provides a simple and secure way to make public keys for email addresses available over HTTPS. The underlying standard was first implemented in GnuPG version 2.1.12 and has been enabled by default since
13%
Logger in HPC System Administration
07.07.2025
Home »  Articles  » 
or incorporated into scripts. Introduction to Logger All of the examples in this article are from a rather dated Ubuntu 20.04 system, although logger  works the same way on current distributions. The basic syntax
13%
FreePBX phone system
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © Lofik, Fotolia.com
installation method – and the only one for which you can buy support from Sangoma – is to install FreePBX on Debian GNU/Linux 12 with a separate script. However, Sangoma itself only provides DEB packages
13%
Building a port scanner in Python
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © Leo Blanchette, 123RF.com
Code, navigate to the Extensions view by clicking on the Extensions icon in the activity bar or by pressing Ctrl+Shift+X and then search for Pylance and install it. This extension provides rich
13%
Develop a simple scanning application with the NAPS2 SDK
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
, specifying the relationships between projects, their build configurations (e.g., Debug or Release ), and target platforms (e.g., Any CPU or x64 ). The file also stores global solution settings, including
13%
What tools do intruders use to
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Wojciech Kaczkowski, 123RF.com
, name servers, and network hosts accessible through the Internet. The popular whois service also offers a means for discovering domain information. The Nmap scanner's -sL option (nmap -sL) performs
13%
Expand your sphere with a piece of Google
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© artida, 123RF.com
Amazon started converting its excess computational power to cash some time ago. Under such names as EC2 (Elastic Computing Cloud), S3 (Simple Storage Service), and SimpleDB, the book and coffee
12%
News for Admins
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
 
-driven evolution, the conflicts that almost tore it apart, and the language's impact on … well … everything." The documentary notes that "what began as a side project in Amsterdam during the 1990s became

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