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24%
With great PowerShell comes great responsibility
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© imagesource, 123RF.com
in a standard CMD window. To invoke PowerShell, open a CMD window and type powershell. You should see a response similar to this: C:\Users\khess>powershell Windows PowerShell Copyright (C) 2009 Microsoft
24%
The System Security Services Daemon
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Nikita Sobolkov, 123RF.com
the SSSD service, it is now capable of storing your sudo rules on a local cache. Request performance should be better from now on, even for online operations, because it is no longer necessary to open
24%
Backup tools to save you time and money
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Melissa King, 123RF.com
. Commercial support might be necessary if implementing the backup solution for a company. However, the amount of free support (forums, mailing lists) can be an issue. When considering open source software
24%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
in a virtual cluster on a limited budget, two open source virtualization systems for Linux include Xen (Figure 1; see the "The Xen Option" box) [1] and KVM (Figure 2) [2
24%
Five special distros for system and network admins
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © Christos Georghiou, 123RF.com
forensic tasks and access data on Android mobile systems. When it starts up, the rescue distribution first opens a boot menu with numerous options. The default, Rescue LiveCD , gives you access to all
24%
Session cookies as targets for criminals
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Vyshnavi Bisani on Unsplash
. Typically, the runtime is based on the duration of a typical user session, but tends to be longer or is automatically extended with each use so as not to disturb users. The Open Worldwide Application
24%
Intrusion detection with Prelude
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Chittima Kasa, 123RF.com
and an open source variant, which the package sources of more or less any major distribution feature today. The download page [2] is rumored to offer the source code, but work was in progress when this article
24%
The fail2ban intrusion prevention framework
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Flavijus Piliponis, 123RF.com
accounts so that a shell login couldn't be used to access the server, but I was still more than aware that having a piece of software so readily open to abuse by brute force was far from ideal. So, fail2ban
24%
Debugging the Linux kernel with the Qemu emulator
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Daniela Mangiuca, 123RF.com
/build/linux-3.2/ gdb The gdb command opens the debugger session. To start, load the kernel code and symbols with: file vmlinux. If you see a no debug-symbols found message, you need to check the debug options
24%
An IP-based load balancing solution
30.11.2025
Home »  CloudAge  »  Articles  » 
arsgera, 123RF
is to use software load balancers. Linux Virtual Server Linux has a major advantage over other operating systems in this regard, because most of its commercial distributions (e.g., Red Hat and open

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