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73%
Finding cracks with Nmap, Portbunny, and Nessus
30.11.2025
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Fotoflash, Fotolia.com
to tell the program to do so by setting the -sT switch. Optionally, you can tell the application which range of ports to scan by setting the -p parameter. Nmap will accept both IP addresses and domain
73%
Expand your sphere with a piece of Google
30.11.2025
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© artida, 123RF.com
Amazon started converting its excess computational power to cash some time ago. Under such names as EC2 (Elastic Computing Cloud), S3 (Simple Storage Service), and SimpleDB, the book and coffee
72%
Free backup tool for data centers
30.11.2025
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© andresr, fotolia.com
Include { 13 File = /usr/sbin 14 Options { 15 Signature = MD5 16 } 17 } 18 Exclude { 19 File = /var/lib/bacula 20 File = /tmp 21 } 22 } 23 24 Messages { 25 Name = Daemon 26
72%
Managing Logs
06.08.2026
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Photo by Conny Schneider on Unsplash
deploying the Graylog Data Node, check the service status with systemctl. If the setup was successful, the output will include a status line: Active: active (running) since Sun 2025-10-12 10:15:22 CEST
72%
Ceph Dashboard at a Glance
02.06.2026
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Lead Image © Prin Pattawaro, 123RF.com
and rebalancing operations. Instead of what the untrained eye sees as cryptic status messages, like those produced by ceph -s, the Dashboard clearly shows whether the cluster is under load, redistributing data when
72%
Creating KVM machines with BoxGrinder and VMBuilder
31.10.2025
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© 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
72%
Configuration management with Chef
30.11.2025
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© Alistair Cotton, 123RF.com
18 validation_client_name "validator" 19 validation_key "/etc/chef/validation.pem" 20 client_key "/etc/chef/client.pem" 21 web_ui_client_name "chef-webui" 22 web
72%
Professional backup solutions compared
30.11.2025
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Kamil Macniak, 123RF
used a virtual machine on a VMware ESX server. The physical underpinnings were a ProServ II server by ExuS Data with two Xeon quad-core processors and 16GB of RAM (Figure 1, top
72%
Using the Expect scripting environment
30.11.2025
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© Ivan Mikhaylov, 123RF.com
tcsh\r" 06 expect "#" 07 send "cp .ssh/authorized_keys ~root/.ssh\r" 08 expect "#" 09 send "cd /etc/ssh; cp sshd_config{,.0}\r" 10 expect "#" 11 send "cat sshd_config.0 | sed -e 's
71%
Introduction to behavior-driven monitoring
30.11.2025
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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

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