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21%
The AWS CDK for software-defined deployments
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © krisckam, 123RF.com
, if it is the first subnet of the entire VPC CIDR block; otherwise, it's just a reserved address. 10.200.0.3 is reserved for future use. 10.200.0.255 is the broadcast address reserved by AWS, as in traditional
21%
The fail2ban intrusion prevention framework
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Flavijus Piliponis, 123RF.com
the smoke and mirrors that some pieces of software employ to keep their workings secret, fail2ban is transparent in the work it does behind the scenes. In simple terms, fail2ban [3] keeps a close eye on your
21%
Successful automatic service detection
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Dmitriy Denysov, 123RF.com
to find out more details about specific services. Listing 1 Nmap Command root@sandbox:~# nmap -v -A www.haribo.de ... Host www2.haribo.com (213.185.81.67) is up (0.011s latency). Interesting
21%
Modern Fortran – Part 2
15.12.2016
Home »  HPC  »  Articles  » 
are over i = 2,n − 1 and j = 2,n −1. Here is how you can write the iteration over the domain using array notation: a(2:n-1,2:n-1) = 0.25 * &     (a(1:n-2,2:n) + a(3:n,2:n) + a(2:n,1:n-2) + a(2:n,3:n
21%
Web applications with Julia
26.01.2025
Home »  Archive  »  2025  »  Issue 85: Monit...  » 
Lead Image © sony sivanandan, 123RF.com
the binary media data as text. Among the myriad ways to do this, the standard in browsers is Base64 encoding [22], provided in Julia by the IBase64 package. Listing 4 shows the server program from Listing 3
21%
Validating Docker containers
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © 36clicks, 123RF.com
of Listing 1, schemaVersion: "2.0.0" reveals that the test descriptions that follow use the 2.0.0 schema. Without this information, the tool immediately denies service. Under globalEnvVars (lines 3-7; note
21%
IPv6 Tables
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © gepard1979, 123RF.com
LAN_IF=eth0 DMZ_IF=eth2 LAN_NET=2001:db8:1::/64 DMZ_NET=2001:db8:2::/64 Next, completely reset the firewall rules to delete any previously existing rules. You can use the -F option for this. You also
21%
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
21%
Test your containers with the Docker Desktop one-node cluster
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Alex Kondratiev on Unsplash
14 if __name__ == '__main__': 15 app.run(host="0.0.0.0", port=5000) Listing 4 my-app/webapp/Dockerfile 01 FROM python:3.11 02 WORKDIR /app 03 COPY . . 04 RUN pip install Flask
21%
RESTful APIs in practice
09.10.2017
Home »  Archive  »  2017  »  Issue 41: Kuber...  » 
Lead Image © Michal Bednarek, 123RF.com
are available for both variants. Listing 4 Demo Account Query with Ruby 01 require "figo" 02 03 session = Figo::Session.new("ASHWLIkouP2O6_bgA2wWReRhletgWKHYjLqDaqb0LFfamim9RjexTo22uj

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