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17%
Script utilities in depth: grep, awk, and sed
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© jirkaejc, 123RF.com
. Here are some examples: _{3,} – Three or more consecutive underscores · {2,5} – Between two and five spaces in a row (where · is a space) (the·){2} – Two consecutive
17%
Docker and Podman environments on Windows and Mac machines
28.11.2021
Home »  Archive  »  2021  »  Issue 66: Inci...  » 
Lead Image © bowie15 , 123RF.com
.14, although you can still resort to Docker Machine [3] in this case, which creates a virtual Linux system on the local host that you can then use to access the Docker engine. The example in Figure 1 uses
17%
Build your own cloud with antMan
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Jorge Coromina on Unsplash
's website [1] and supply your email address to receive the link. The antMan package is about 3.1GB, and you should follow the normal steps to put the ISO file on a DVD or USB stick. Most servers today ship
17%
Border Gateway Protocol
30.01.2024
Home »  Archive  »  2024  »  Issue 79: Monit...  » 
Lead Image © Rachael Arnott, 123RF.com
), as of 2023, a full BGP table on the Internet contained around 940,000 prefixes for IPv4 and 172,400 prefixes for IPv6. Routers therefore need to have a large amount of physical memory. ASNs in Practice
17%
Code IaC for provisioning of preconfigured virtual environments
26.01.2025
Home »  Archive  »  2025  »  Issue 85: Monit...  » 
Lead Image © vladnikon, 123RF.com
is an excellent Bicep-based reference and starting point that helps you get up and running quickly [3]. Table 1 BICEP Resource Definitions Resources Versioned w/@yyyy-mm-dd-state Common
17%
OpenVPN with e-tokens in large-scale environments
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© sTan, fotolia.com
. Tokens and Certificates Of course, the VPN dial-up no longer uses a simple pre-shared key (PSK) but, instead, uses secure, centrally manageable X.509 certificates [3] that automatically expire. You can
17%
Getting started with Prometheus
28.11.2021
Home »  Archive  »  2021  »  Issue 66: Inci...  » 
Photo by Clay LeConey on Unsplash
in each mode. # TYPE node_cpu_seconds_total counter node_cpu_seconds_total{cpu="0",mode="idle"} 71039.6 node_cpu_seconds_total{cpu="0",mode="iowait"} 54.79 node_cpu_seconds_total{cpu="0",mode="irq"} 865
17%
Harden your Apache web server
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
have been using Apache for many years, it is best to take a look at the changes in version 2.4 [3], which include the new mod_authz_host access module with the Require directive, which replaces
17%
Develop your own scripts for Nmap
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Raman Maisei, 123RF.com
the output. For example: nmap -sV --script exploit -d3 targethost NSE scripts have a clear-cut structure. This becomes most clear when you take a look at an existing script. The scripts not only define
17%
Understanding Cybersecurity Maturity Model Certification
28.11.2022
Home »  Archive  »  2022  »  Issue 72: OpenS...  » 
Photo by Braden Collum on Unsplash
of the DIB sector, the DoD cannot scale its organic cybersecurity assessment capability to conduct on-site assessments of approximately 220,000 DoD contractors every three years. As a result, the Department

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