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46%
Introduction to LVM
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Dvarg, 123RF.com
in the world of LVM [1] [2]. Physical volumes (PVs) are block devices (i.e., whole disk or partitions). To allow an LVM to use a PV, the LVM must be initialized using a command that I will show shortly. Doing
46%
Visualize data throughput with SMBTA
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Qi Feng, 123RF.com
../smbtatools-1.2.2 Next, make and make install the compiler package and copy the programs to the correct location. To start the daemon, type smtad -u -n which tells the daemon (u) and the client (n
46%
Targeted defense against brute force attacks
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Andrii IURLOV, 123RF.com
-N sshguard The second command handles IPv6 packets. The next step is to extend the input chain so that network traffic is routed through the sshguard chain (Figure 2): sudo iptables -A INPUT -j
46%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
# start. 32 if [ -n "$OCF_RESKEY_monitor_sipuri" ]; then 33 ocf_run sipsak -s "$OCF_RESKEY_monitor_sipuri" 34 rc=$? 35 case "$rc" in 36 1|2) return $OCF
46%
OpenVPN with e-tokens in large-scale environments
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© sTan, fotolia.com
VPN. The free SSL virtual private network (VPN) joined the mainstream with release 2.1, and it is useful for large-scale setups. Aladdin [2] dominates the market for USB stick-based cryptographic access control
45%
Demystified: The facts about green IT
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Iakov Kalinin, 123RF
, and IZES Institut für ZukunftsEnergieSysteme (Institute for Future Energy Systems) GmbH [1] [2] investigated precisely this topic. The question the researchers set out to answer was: How economical
45%
New approaches for forensics in cloud environments
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
illustrator, 123RF.com
on the cloud security problem and on corresponding legal issues [1]. This paucity of information was confirmed by other publications [2] [3]. Despite this, the topic is still largely overlooked and a huge amount
45%
Checking password complexity with John the Ripper
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
for checking a password hash file against a password dictionary is very high. A hacker can recover dictionary-based passwords in minutes, whereas a brute force attack can take days. Brute force is a single-character-at-a
45%
Adapting VMware vSphere for state-of-the-art hardware
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© victoroancea, 123RF.com
filesystem after installing; otherwise, ESXi will grab 512MB of RAM for the scratch partition, and, of course, its content is lost when you reboot [1]. Image Builder is a component of VMware vSphere Power ... 9
45%
Mobile PC Monitor: A sys admin's best friend
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Buchachon Petthanya, 123RF.com
application. Figure 1 shows a screenshot of PC Monitor on Windows. Figure 2 is the PC Monitor installation launched on Linux (answer "No" (n ) to the Start the PC Monitor Manager question), and Figure 3 shows

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