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18%
Ergonomics and security of graphical email clients
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Lead Image © Vlad Kochelaevskiy, Fotolia.com
graphical email clients do in terms of user ergonomics, security, and extensibility. Functionality The heart of all email clients is the connection to the mail server. The client uses POP3 or IMAP
18%
Aggregating information with Huginn
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Lead Image © it Ilka Burckhardt, Fotolia.com
. The required modifications are explained in the Huginn wiki [3]. The software is based on Ruby on Rails [4] and therefore requires an installed Ruby environment; in fact, it needs version 2.2 or 2.3
18%
New versions of the Endian and Sophos UTM solutions
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © Dmitriy Cherevko, 123RF.com
is available from the company's website [3]. For companies, Sophos also offers the Essential Firewall, a free version which, however, again only provides basic security functions. Except for the DNS proxy
18%
Troubleshooting and analyzing VoIP networks
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Ioannis Kounadeas, Fotolia.com
problems on Open Systems Interconnection (OSI) model Layer 2 or 3 is almost trivial compared with VoIP analysis. In Internet telephony, the sources of error migrate to higher OSI Layers 4 through 7. Vo
18%
The practical benefits of network namespaces
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Morganimation, fotolia.com
Linux Containers (LXC) [1] and Docker [2], as well as software-defined network (SDN) solutions [3], make extensive use of Linux namespaces, which allow you to define and use multiple virtual
18%
CPU affinity in OpenMP and MPI applications
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Lead Image © podfoto, 123RF.com
serial, OpenMP, OpenACC, and MPI code. I carefully watch the load on each core with GkrellM [3], and I can see the scheduler move processes from one core to another. Even when I leave one to two cores free
18%
openlava – Hot resource manager
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Konrad Bak, 123RF.com
to pay attention to a few gotchas. (In my first attempt, I didn't pay attention to these.) In the next sections, I'll walk through the installation of openlava on a cluster (the Warewulf-based cluster [3
18%
Getting started with I/O profiling
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Photosani, Fotolia.com
to do, but some basic tools can help you. For example, tools such as sysstat utilities sar, iostat, and nfsiostat [1]; iotop [2]; and collectl [3] can be used to help you measure your I/O usage. (This
18%
Building more efficient database applications with a graph database
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Jakub Krechowicz, 123RF.com
://neo4j.org http://www.sones.de/static-en/ http://www.infogrid.org http://www.hypergraphdb.org http://www.dekorte.com/projects/opensource/vertexdb/ License GPLv3
18%
Configuration management with Chef
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alistair Cotton, 123RF.com
-certs, make, gcc, and g++. The certificates from ssl-cert will be required later. According to the how-to http://1, Chef prefers RubyGems version 1.3.6 or newer, but not 1.3.7. This version contains a bug

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