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29%
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
29%
Clustering with OpenAIS and Corosync
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
brunoilfo, 123RF.com
and maintained only by Red Hat. In more recent versions (e.g., 2.0 in RHEL 5 and Fedora Core 6 or later), the legacy CMAN implementation was replaced by an open implementation based on the Application Interface
29%
High availability clustering on a budget with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Yulia Saponova, 123RF.com
with nearly native performance. However, KVM does need a state-of-the-art CPU generation with virtualization functionality (VT-X/AMD-V). All the virtual machines in this article will run on the KVM hypervisor
29%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
X4 920 CPU (quad core) 8GB of memory (DDR2-800) The operating system and boot drive are on an IBM DTLA-307020 (20GB drive at Ultra ATA/100) /home is on a Seagate ST1360827AS A 64GB Intel X
29%
Julia: A new language for technical computing
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
.47 1,336.37 2,383.80 225.23 1.55 parse_int 1.44 16.50 815.19 6,454.50 337.52 2.17 quicksort 1.49 55
29%
Lmod – Alternative Environment Modules
30.01.2013
Home »  HPC  »  Articles  » 
and LuaFileSystem. Luaposix requires Lua BitOp as well. These libraries might work with lua 5.2 (the current version), but to make things easier, the author of Lmod, Robert McLay at the Texas Advanced
29%
Security data analytics and visualization with R
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Rancz Andrei, 123RF.com
(data$IPAddress) 14 srt <- ct[order(ct$freq, decreasing = TRUE), ] 15 top10 <- head(srt,10) 16 17 ggplot(data=top10, aes(x=x, y=freq, fill=x)) + geom_histogram(stat="identity", colour="black", show
29%
Security first with the Hiawatha web server
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Tatiana Popov, 123RF.com
20 /sbin/iptables --policy FORWARD DROP 21 /sbin/iptables --policy INPUT DROP 22 /sbin/iptables --policy OUTPUT DROP 23 24 #new chains. Statefull and scrub icmp 25 /sbin/iptables --new
29%
Service mesh for Kubernetes microservices
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image by Ricardo Gomez Angel on Unsplash.com
: 18 - "blog.datadoc.info" 19 --- 20 apiVersion: networking.istio.io/v1alpha3 21 kind: VirtualService 22 metadata: 23 name: wordpress 24 spec: 25 hosts: 26 - "blog.datadoc.info" 27 gateways
29%
Prepare, analyze, and visualize data with R
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © Buchachon Petthanya, 123RF.com
("RStudio", "Atom", "none", "RStudio", "Emacs", "RStudio", "RStudio", + "RStudio", "Emacs", "RStudio", "Atom", "RStudio", "RStudio")) > plot(dat$environment) > ggplot(dat, aes(x

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