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66%
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
65%
vSphere 5 vs. XenServer 6
30.11.2025
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© Kozinia, 123RF.com
-shot challenger in this test, after some internal discussion, Red Hat adopted an almost Apple-like stance and refused to open up the current beta test to the press. Whereas VMware customers could run six or 12
65%
pfSense firewall and router distribution
30.11.2025
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© Sergey Mironov, 123RF.com
, pfSense uses a DHCP client to retrieve an IP address for the WAN interface. In line with RFC 1918, it refuses IP addresses from the areas reserved for private LANs, 10/8, 172.16/12, and 192
65%
Dispatches from the world of IT
30.11.2025
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of your site, they'd receive an Amazon S3 error. Now, however, you can specify a static document and direct visitors there. And, you can create custom error documents, so if users hit a page that should
65%
Maatkit tools for database administrators
30.11.2025
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tiero, 123RF
sprzblog mysql limesurvey -uroot -ppassword > backup.sql will take 21 seconds to complete: real 0m21.626s user 0m0.000s sys 0m0.000s In the case of larger databases on non-replicated servers
65%
Targeted defense against brute force attacks
30.11.2025
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Andrii IURLOV, 123RF.com
specific ports with sshguard, you can use the --destination-ports parameter to find them. For example, sudo iptables -A INPUT -m multiport -p tcp --destination-ports 21,22 -j sshguard would block only
65%
Monitoring KVM instances with Opsview
30.11.2025
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© Gina Sanders, Fotolia
for the KVM host: Connectivity (LAN) Unix load RAM/Swap load Storage utilization SSH availability (typically on port 22) Optional extensions: If you use libvirt, you can check
64%
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
64%
Monitoring for small and medium-sized companies compared
30.11.2025
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-ons. This explains why there have been more than 3 million new Nagios installations worldwide in the past 12 months. This is why Nagios is the industrial standard for monitoring today. … Nagios has a much larger

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