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17%
News for Admins
07.10.2025
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AMD64 and ARM64 HTTP Boot support in Debian Installer and Live images for UEFI/U-Boot systems Upgraded software stack: Gnome 48, KDE Plasma 6, Linux kernel 6.12 LTS, GCC 14.2, Python 3
17%
Avoiding chaos in clusters with fencing
30.11.2025
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© kobra78, Fotolia.com
:external/ipmi 10 params hostname="bob" ipaddr="192.168.122.111" 11 userid="4STONITHonly" passwd="evenmoresecret" interface="lanplus" 12 op start interval="0" timeout="60" 13 op stop interval="0" timeout
17%
Penetration testing and shell tossing with Metasploit
30.11.2025
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© Jean-Marie Guyon, 123RF.com
-CERT [6]. I would recommend anyone doing work in the realm of ICS/SCADA systems to take this class. One day included a 12-hour exercise in which participants attacked (red team) or defended (blue team). I
17%
Password protection with Phpass
30.11.2025
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© Michael Moeller, fotolia.com
$password = "test12345"; 09 // In a production web application, the password would be retrieved from a form filled out by the user 10 $hashwert = $hasher->HashPassword($password); 11 12 echo "Password
17%
The Swiss Army knife of fault management
30.11.2025
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© Dmitry Rukhlenko, 123RF.com
12 The monitor is set up by /etc/opennms/poller-configuration.xml: 13 14 ... 15 17
17%
Checking password complexity with John the Ripper
30.11.2025
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c/s virtual 12 13 Benchmarking: OpenBSD Blowfish (x32) [32/64 X2]... DONE 14 Raw: 723 c/s real, 723 c/s virtual 15 16 Benchmarking: Kerberos AFS DES [48/64 4K]... DONE 17 Short: 378501 c/s real
17%
Monitoring virtualization environments with Nagios and Icinga
30.11.2025
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Sergej Khackimullin, 123RF
technologies. Besides Xen, KVM, and VirtualBox, Libvirt also supports OpenVZ, VMware ESX, and GSX. The nagios-virt [12] tool was written on the basis of this API and helps administrators configure host
17%
From Out of the Blue
30.11.2025
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], which can yield a surprising number of vulnerabilities in a short amount of time. Many of the best "smart" (protocol- or format-aware) fuzzers, such as Sulley [11] or Peach [12] are well documented
17%
Intruder detection with tcpdump
30.11.2025
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© Monika Wisniewska, 123RF.com
: Figure 4: Header bytes 12-15. # tcpdump -n -r dumpfile.lpc -c 10 'tcp[13] == 18' and host 172.16.183.2 Figure 5 is an example what this command returns. When capturing data with tcpdump, you can
17%
Nagios author Ethan Galstad
30.11.2025
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of Nagios and I released it. Honestly, I didn't think more than 10 or 12 people would use it. I didn't think anyone would find it interesting, but it started taking off and becoming very popular, and that

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