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11%
Moving HPC to the cloud
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Zarko Cvijovic, 123RF.com
of options, including dual four-core Xeon, dual six-core Xeon, or quad 12-core AMD processors ranging in speed from 2.2 to 2.9GHz with 24 to 128GB of RAM per server and up to 1TB of scratch local storage per
11%
Creating KVM machines with BoxGrinder and VMBuilder
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© yewkeo, 123RF.com
Service (Amazon S3) 19 - ami plugin for Amazon Simple Storage Service (Amazon S3) 20 - sftp plugin for SSH File Transfer Protocol 21 - ebs plugin for Elastic Block Storage 22 - local plugin
11%
Monitoring for small and medium-sized companies compared
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
starter kit: https://www.icinga.org/2010/09/22/starter-kit-icinga-virtual-appliance/ Zabbix appliance: http://www.vmware.com/appliances/directory/353
11%
pfSense firewall and router distribution
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Sergey Mironov, 123RF.com
). Figure 13: These settings prevent the computer with the IP address of 192.168.1.66 from accessing TCP port 22 – that is, the SSH service. You need to watch out for two pitfalls here: Because
11%
Introduction to behavior-driven monitoring
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Mariya Herasymenko, 123RF
Scenarios: 21 cucumber /usr/lib/nagios/plugins/cucumber-nagios/checks/features/www.xing.com/startpage.feature:4 # Scenario: Visiting home page 22 23 1 scenario (1 failed) 24 4 steps (1 failed, 3 skipped) 25 0
11%
Clustering with OpenAIS and Corosync
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
brunoilfo, 123RF.com
rhcsNodename: iscsi1 15 rhcsCluster-id: 46516 16 cn: cman 17 objectclass: rhcsCman 18 19 dn: cn=clusternodes,name=cluster,dc=tuxgeek,dc=de 20 cn: clusternodes 21 objectclass: nsContainer 22 23 dn: cn
11%
Network analysis with Wireshark
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Reinhard Eisele
capture or display filters. The capture filter would look like this: port 22 Then start capturing, initiate an SSH login at the console, and in the Analyze menu, select Follow TCP Stream . The result
11%
High-availability workshop: GFS with DRBD and Pacemaker
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Maxim Borovkov, 123RF.com
17 18 19 20 21 22 23 This example also
11%
Finding cracks with Nmap, Portbunny, and Nessus
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Fotoflash, Fotolia.com
to popular ports, such as 80 (HTTP) or 22 (SSH), and pings. If Portbunny does not register a response to a port request, but the trigger packet reaches the target, it tags the port as filtered. Using Portbunny
11%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
] 13 rw=randread 14 runtime=60 15 16 [sequentialread] 17 stonewall 18 rw=read 19 runtime=60 20 21 [randomwrite] 22 stonewall 23 rw=randwrite 24 runtime=60 25 26 [sequentialread] 27 stonewall 28 rw

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