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17%
Scanning servers with Nikto
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © spleen87, photocase.com
[6]. As you can see, Nikto uses the Alpine operating system for its base image. A Perl script (nitko.pl) runs on launch. Listing 1 Dockerfile for Nikto 01 FROM alpine:edge 02 MAINTAINER
17%
Stretching devices with limited resources
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Lead Image © Lucy Baldwin, 123RF.com
, the natural places to build current OS images are the Yocto project [5] and Armbian [6], a community-managed distribution that builds board-specific images of Ubuntu and Debian. I chose to use the stable
17%
Tools for troubleshooting the network
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Photographer, 123RF.com
, and you are given minimum, maximum, and average values for the speed of ICMP responses. In addition to performing the simple ping test, you can access a freely configurable website, or transfer 1MB of test
17%
PostgreSQL Replication Update
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © Golkin Oleg, 123RF.com
can only accomplish this by rolling back one of the two transactions ex post (i.e., after the commit). For example, suppose you have $100 in a joint bank account and two people want to withdraw $90
17%
macOS file recovery and security
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Lead Image © Sgursozlu, Fotolia.com
. For just under $90 you can acquire the Pro version, which lets you recover data. An alternative product is EaseUS Data Recovery Wizard for Mac [5], which can also search for recoverable files in the free
17%
Get started with OpenShift
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © andegro4ka, 123RF.com
Minishift [6]. OKD calls Minishift an "all-in-one" virtual machine, which is fully functioning and even boasts its own, private container image registry. Once you're up and running, you will access the GUI
17%
Security after Heartbleed – OpenSSL and its alternatives
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © Ilya Masik, fotolia.com
that is linked against OpenSSL. SSL implementations of important tools such as Postfix also rely primarily on OpenSSL. OpenSSL development began in the mid 90s; the trigger for this development was the infamous U
17%
Migrating CentOS to Rocky Linux with migrate2rocky
06.10.2022
Home »  Archive  »  2022  »  Issue 71: Kuber...  » 
Photo by Ray Hennessy on Unsplash
corresponds to RHEL 8 (with 4.x kernels), of which multiple minor versions have been released since. Rocky Linux 8.4 appeared over a month after RHEL 8.4, whereas 8.5 and 8.6 were released less than a week
17%
Better monitoring for websites and certificates
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © amasterpics123, 123RF.com
certificates . An example of a fairly comprehensive certificate check (still without using the full range of options) is: ./check_cert --url checkmk.de --port 443 --not-after 3456000 1728000 --max-validity 90
17%
History and use of the mail utility
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Vlad Kochelaevskiy, fotolia.com
. As a guide, one well-known and widely adopted webmail provider currently limits 20MB as the outgoing file size for its SMTP, per email. I tend to be stricter and limit the size to 10MB on a smaller

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