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9%
Security without firewalls
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© rukanoga, 123RF.com
's usually TCP port 22) to port 2222, for example, to keep port scans from filling up your logs. Without TCP Wrappers enabled, scans might run dictionary attacks on your server where password combinations
9%
Enterprise communication with IRC
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© anyka, 123RF.com
on */ 17 port = 5556; 18 19 /* hub mask: the mask of servers that this server may hub. Multiple 20 * entries are permitted 21 */ 22 hub_mask = "*"; 23 24
9%
Password protection with Phpass
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Michael Moeller, fotolia.com
be in the database for a production web application 18 $result = $hasher->CheckPassword($password, $passwordfromdb); 19 20 if ($result) { 21 echo "Password match!"; 22 } 23 else { 24 echo "Password
9%
Maatkit tools for database administrators
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
tiero, 123RF
of the stress test shown in Figure 2, shows that some 19,200 queries composed of 55 different commands were issued. The system, a server with 768MB of RAM and a Pentium 3 CPU, took a total of 22 seconds to answer
9%
Quick patches with Ansible
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
Lead Image © David Crockett, Fotolia.com
# Backup 15 raspi06: 16 ansible_ssh_private_key_file: /home/treuss/.ssh/raspi06 17 ansible_user: thomas 18 dns_servers: 19 hosts: 20 # Pi-hole 21 pihole
9%
Modern network diagnostics on Windows and Linux
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
Photo by Nk Ni on Unsplash
). Figure 1: The ss command output on Linux. If you need more specific information, you can use the -t, -u, and -x options to filter by protocol. The -t flag restricts the output to TCP connections
9%
PostgreSQL Replication Update
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © Golkin Oleg, 123RF.com
: http://www.cybertec.at/en/ The Author Hans-Jürgen Schönig is the CEO of Cybertec Schönig & Schönig GmbH, a company providing 24x7
9%
Detect anomalies in metrics data
02.08.2022
Home »  Archive  »  2022  »  Issue 70: Defen...  » 
Lead Image © rudall30, 123RF.com
, the extremes occur rarely and the median (i.e., the 50th percentile) occurs particularly frequently. On both sides of the x -axis, the number of matches per value increases as the median is approached. Given 100
9%
Monitor your network
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Endrille, Fotolia
+O and exit nano with Ctrl+X. You can then run through the gamut of systemctl commands to enable the service to start automatically upon boot and then start it manually with: # systemctl enable pandora
9%
Automating the Azure infrastructure using a command-line interface
13.02.2017
Home »  Archive  »  2017  »  Issue 37: Distr...  » 
Lead Image © nk88, photocase.com
, Mac OS, and Linux systems. At the Command Line The CLI plays a focal role in automating tasks in Azure. Microsoft offers installation packages for Windows, OS X, and Linux. In this case, I will try

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