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36%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
seconds, for example: # nc -p 16000 -w 30 examplehost.tld 22 If firewalling is in place and you need to originate your connection from a specific IP address to open a port, then you can enter: # nc -s 1.2.3
36%
Testing Disaster Recovery Plans with Chaos Engineering
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Photo by Mark Timberlake on Unsplash
therefore gained significance primarily because of the proliferation of cloud, DevOps, and Kubernetes approaches. The best-known tools are Gremlin [3] and LitmusChaos [4] (Table 1). Gremlin has been
36%
Using the Expect scripting environment
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ivan Mikhaylov, 123RF.com
to connect to the remote host with ssh. (6) expect – Wait for "(yes/no)? " in the output. This is the end of the several-line output about host key exchange. (7) send – Send the string "yes" plus
36%
Create a high availability VM with  DRBD9  and Reactor
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Emma Simpson on Unsplash
to this component as Horrorsync. Corosync was later split up again. Whereas Corosync now primarily handles the exchange of data between the different systems in a cluster, Kronosnet [3] ensures that the information
36%
Free backup tool for data centers
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© andresr, fotolia.com
Append = "/var/lib/bacula/log" = all, !skipped 27 Console = all, !skipped, !saved 28 Mail = root@localhost = all, !skipped 29 Mail Command = "/usr/sbin/bsmtp -h localhost -f \"\(Bacula\) \<%r\>\" -s
36%
Active Directory overview
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Maksym Yemelyanov, 123RF.com
Microsoft software is so widespread in the enterprise environment that it's easy to forget that Windows played a minimal role on the server operating system market back in the 1990s. The market ... 6

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