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18%
Monitoring KVM instances with Opsview
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Gina Sanders, Fotolia
Since the Linux kernel 2.6.20 release in February 2007, the Kernel-Based Virtual Machine, KVM [1], has made much progress in its mission to oust other virtualization solutions from the market. KVM
18%
Tuning your filesystem's cache
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
experience [2]. A good tool for cache control is vmtouch [3], which is at home on most Linux 2.6, FreeBSD 7.x, or Solaris 10 kernels; mileage may vary on other *nix variants. Expect partial functionality
18%
The RADOS object store and Ceph filesystem
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Brigida Soriano, Fotolia.com
to install RADOS and Ceph. Ceph, which is a plain vanilla filesystem driver on Linux systems (e.g., ext3 or ext4), made its way into the Linux kernel in Linux 2.6.34 and is thus available for any distribution
18%
Securing email communication with GnuPG
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Amol Tyagi on Unsplash_Key.jpg
in which security and data integrity are paramount, especially when it comes to information with EU-RESTRICTED and NATO-RESTRICTED information [6]. Provisioning Keys in the WKD A Web Key Directory (WKD
18%
HPC Software Road Gets a Bit Smoother
10.09.2013
Home »  HPC  »  Articles  » 
except IS (integer sort). More information on each test can be found at the NAS site. Table 1: OpenMP and MPI versions of the NAS Parallel Benchmarks. Both tests used gcc/gfortran version 4.4.6
18%
Stopping Side Channel Attacks
16.10.2012
Home »  Articles  » 
 
as shown in the following listing. Apache/2.2.16 (Debian) DAV/2 SVN/1.6.12 mod_fcgid/2.3.6 Phusion_Passenger/3.0.11 mod_ssl/2.2.16 OpenSSL/0.9.8o Server at www.domain.tld Port 80 Treacherous Error Messages
18%
Cross-Vendor IPsec
25.10.2011
Home »  Articles  » 
 
connections to join remote LANs through a private tunnel over the Internet. The first RFCs on IPsec were drafted during the development of IPv6 and date back to 1995. The current version is described by RFC
18%
Intruder Detection with tcpdump
28.11.2011
Home »  Articles  » 
 
, # snort -r snort001.log -A full -c /etc/snort/snort.conf which gives you information like total packets processed, protocol breakdown, alerts, and so on (Figures 6 and 7
18%
Office 365 vs. Google Apps
19.01.2012
Home »  Articles  » 
 
and editing contacts. Just as Lync is integrated into the Outlook Web App, the Google Mail web interface integrates the Google Chat feature (Figure 6). Figure 6
18%
Pen Test Tips
30.04.2012
Home »  Articles  » 
 
, use the winenum script and the scraper script. The winenum script will dump tokens and hashes, providing you with lots of information (see Figure 6). The scraper script will pull down the registry

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