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  • Article (Print) (125)
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8%
Security without firewalls
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© rukanoga, 123RF.com
/24, \ 1.2.3.4/32, 21.21.21.0/19 IP addresses hosts.allow can be set to accept connections from hostnames, too. One example might be ALL: *.domain.tld or you might have an administrative group
8%
Tested: Autoconfiguring IPv6 clients
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Benis Arapovic, 123RF.com
a DNS server, it uses three standard addresses as its name servers: fec0::1, fec0::2 and fec0::3. The prefix fec0 was originally the counterpart to the RFC 1918 addresses but has been deprecated. If you
8%
Installing and managing thedistributed GlusterFS filesystem
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Tetiana Pustovoitova, 123RF.com
to turn to the servers that will be providing the storage capacity. If you are running these servers on a recent CentOS 6.2, you can download the matching GlusterFS packages off the Internet [3]. You need
8%
Backup tools to save you time and money
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Melissa King, 123RF.com
. On workstations with only a handful of configuration files and few data files, it might be enough to store these files on external media (such as USB drives). Then, if the system should crash, it could be simpler
8%
How Kanban helps improve IT processes
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© NYUL, 123RF.com
and shorter deployment cycles are not a suitable framework for inflexible sprints, which do not allow changes to the concept on the one hand and threaten to cause idle time with timeboxing [2] on the other
8%
Dynamic routing in Linux with Quagga
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© petrol, 123RF.com
cases, between a provider and an enterprise. RIP is the oldest IGP – the first version is from 1988. The current version is version 2, which also supports IPv6 via RIPng. Despite this, RIP is considered
8%
How Upstart boots Ubuntu-based systems
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
the runlevel event: start on runlevel [23] In this case, the job would only run in runlevels 2 and 3 – parallel to all the scripts in these runlevels. Upstart triggers the runlevel event when it processes
8%
Moving HPC to the cloud
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Zarko Cvijovic, 123RF.com
.4/hour (US$ 0.15/core per hour), Cluster GPU instance is US$ 2.1/hour, and the High I/O instance is US$ 3.1/hour. Thus, using the small usage case (80 cores, 4GB of RAM per core, and basic storage of 500
8%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
/0K /s] [4137 /0 iops] [eta 00m:06s] In the example, the first job is performing a sequential read, marked as r in square brackets, while Fio hasn't initialized the second job, marked as P
8%
Introduction to behavior-driven monitoring
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Mariya Herasymenko, 123RF
three lines. The first two lines give the feature name and a short intuitive description of the status to expect. The description can take up multiple lines. In Listing 2, the feature stipulates that www.xing.com

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