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18%
Managing Linux Memory
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © J.R. Bale, 123RF.com
). Also, setting swappiness = 0 on SLES 11 SP 2 and SP 3 seems to protect the applications adequately. Amazingly, Red Hat Enterprise Linux 6.4 behaves differently: The implementation seems
18%
A modern logging solution
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
of a forwarder node configuration is shown in Listing 2, whereas Listing 3 shows an aggregator node. In these examples, the forwarder node tails a logfile and forwards the log events to the aggregator node, which
18%
DNS filtering with authentication
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
Photo by Nathan Dumlao on Unsplash
to the developers, 768MB of RAM and 4GB of free disk space are all it takes; moreover, UDP/53, TCP/80, and TCP/  443 ports are required. Starting NxFilter is unproblematic on popular operating system platforms
18%
Vagrant, Serf, Packer, and Consul create and manage development environments
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © 36clicks, 123RF.com
these base images "boxes." Prebuilt boxes can be downloaded free of charge via the community collection on Vagrantbox.es [3] (Figure 1) or from the Vagrant Cloud powered by HashiCorp [4]. The latter provides
18%
Tools for troubleshooting the network
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Photographer, 123RF.com
(Figure 3). In subsequent test runs, you can compare the results with a previously saved map; devices added or removed are listed in each category. Figure 3
18%
Build secure IoT applications with open source
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Maksim Kabakou, 123RF.com
to fix. Updates are data intensive. Even a small radio firmware for a 3G or 4G cellular modem can be 10 to 20MB, and embedded Linux root filesystems are becoming larger and larger. Thus, patch or delta
18%
Detecting security threats with Apache Spot
14.03.2018
Home »  Archive  »  2018  »  Issue 44: Cloud...  » 
Photo by Geran de Klerk on Unsplash
risks, quantifying possible data loss and responding to attacks. Apache Spot [3] uses big data and modern ML components to improve the detection and analysis of security problems. Apache Spot 1.0 has been
18%
Manage logical volumes with GUI tools
09.10.2017
Home »  Archive  »  2017  »  Issue 41: Kuber...  » 
Lead Image © grafner, 123RF.com
of physical and logical volumes that can join the group – 256 is the default. Also specify the size of the individual memory cells here; this defaults to 4MB per unit (Figure 3). The new group, which you can
18%
HPC Storage – I/O Profiling
26.01.2012
Home »  HPC  »  Articles  » 
. rMB/s: Number of megabytes read from the device per second. wMB/s: Number of megabytes written to the device per second. avgrq-sz: Average size (in sectors) of the requests issued to the device
18%
History and use of the mail utility
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Vlad Kochelaevskiy, fotolia.com
[<-] 334 VXNlcm5hbWU6 [->] Y2hyaXNiaW5uaWUzQGdtYWlsLmNvbQ== [<-] 334 UGFzc3dvcmQ6 [<-] 235 2.7.0 Accepted [->] MAIL FROM: [<-] 250 2.1.0 OK t2fjm4427fd213ply.2523 - gsmtp [->] RCPT TO

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