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65%
pfSense firewall and router distribution
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Sergey Mironov, 123RF.com
. Because it had to run in RAM, extensions were difficult. This situation prompted the two to start working on their own distribution and spawned the development of pfSense [1]. The core of version 2.0 from
65%
Using Expect scripts to automate tasks
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Kheng Ho Toh, 123RF.com
14 expect -exact "$ " 15 send -- "ssh aspen\r" 16 expect -exact "password: " 17 send -- "PASSWORD\r" 18 expect -exact "$ " 19 send -- "ps -ef|grep apache\r" 20 expect -exact "$ " 21 send -- "exit\r" 22
65%
The fail2ban intrusion prevention framework
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Flavijus Piliponis, 123RF.com
/filter.d/sasl.conf: failregex = (?i): warning: [-._\w]+\[\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed: authentication failure A quick hunt through my /var/log/mail.log files reveals: Dec 20 22
65%
Container and hardware e-virtualization under one roof
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Maxim Kazmin, 123R
; whereas KVM [3] supports genuine hardware virtualization in combination with the right CPU. Both virtualization technologies support maximum performance for the guest system in line with the current state
65%
Monitoring for small and medium-sized companies compared
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
://www.zabbix.com   https://www.icinga.org http://www.nagios.org Version 1.8.x 1.8.6   1.6 3.3.1 License GPLv2 GPLv2   GPLv2 Core
65%
The RADOS object store and Ceph filesystem
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Brigida Soriano, Fotolia.com
addr = 10.42.0.101:6789 14 [mon.b] 15 host = bob 16 mon addr = 10.42.0.102:6789 17 [mon.c] 18 host = charlie 19 mon addr = 10.42.0.103:6789 20 [osd.0] 21 host = alice 22 [osd.1] 23 host
64%
Creating KVM machines with BoxGrinder and VMBuilder
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© 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
64%
Moving HPC to the cloud
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Zarko Cvijovic, 123RF.com
will provide sub-par performance. A deeper treatment of these issues can be found in a recent article called "Will HPC Work in the Cloud?" [3]. Finally, any remote computation scheme needs to address
64%
Network analysis with Wireshark
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Reinhard Eisele
runs with root privileges. The exceptions are Mac OS X and Solaris, where the user only needs access privileges for the network interface card device file. By default, Tcpdump reads all the data
63%
I/O benchmarks with Fio
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Kheng Ho Toh, 123RF.com
] 13 rw=randread 14 runtime=60 15 16 [sequentialread] 17 stonewall 18 rw=read 19 runtime=60 20 21 [randomwrite] 22 stonewall 23 rw=randwrite 24 runtime=60 25 26 [sequentialread] 27 stonewall 28 rw

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