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15%
Targeted defense against brute force attacks
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Andrii IURLOV, 123RF.com
specific ports with sshguard, you can use the --destination-ports parameter to find them. For example, sudo iptables -A INPUT -m multiport -p tcp --destination-ports 21,22 -j sshguard would block only
15%
ZFS on Linux helps if the ZFS FUSE service refuses to work
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © Luis Louro, 123RF.com
-EY 09 config: 10 11 zroot ONLINE 12 ata-ST380215AS_9QZ68Z7S ONLINE Not Under Root Caution is advised here: Without specifying any options, the zpool
15%
Creating a private apt repository with reprepro
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © binkski, 123RF.com
public_html $ cd public_html/ ~/public_html$ ln -s ../packages packages ~/public_html/packages$ chmod 750 conf/ ~/public_html/packages$ chmod 750 db/ GPG Key To enable a user to use the repository
15%
Building a custom Cyberdeck
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © Lucy Baldwin, 123RF.com
and furious as rapid troubleshooting demands. It's time to give this project another try, but with the modern hardware of the 2020s! Figure 1: The diminutive
15%
Develop a simple scanning application with the NAPS2 SDK
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
ScanOptions 21 { 22 Device = device, 23 PaperSource = PaperSource.Feeder, 24 PageSize = PageSize.A4, 25 Dpi = 300 26 }; 27 28 var images = new List
15%
High-Performance Python 3
19.09.2019
Home »  HPC  »  Articles  » 
to LLVM’s intermediate code, including for Nvidia and AMD GPUs and CPUs. The really great part is that you don’t have to compile any external code or have a C/C++ compiler installed, because LLVM comes
15%
Protecting your web application infrastructure with the Nginx Naxsi firewall
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Pansiri Pikunkaew, 123RF
systems. Listing 1 Load Balancer Configuration 01 upstream backend { 02 backend1.example.com server weight = 5; 03 server backend2.example.com max_fails fail_timeout = 10s = 5; 04
15%
BackTrack Linux: The Ultimate Hacker's Arsenal
20.09.2011
Home »  Articles  » 
 
't speak until spoken to.)   The port scanner sends out a SYN request on a particular port number (22). The target responds with an ACK. The scanner notes the ACK and sends a RST to disconnect from
15%
Getting started with the OpenStack cloud computing framework
28.06.2011
Home »  CloudAge  »  Articles  » 
 
balancing). The OpenStack initiative, which was initiated in July 2010 by US hosting service provider Rackspace, NASA, and other partners, is designed to provide provide an IaaS (Infrastructure as Service
15%
Look for file changes and kick off actions with Watchman
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © leksele, 123RF.com
] 20 } 21 ] 22 } 23 ] 24 } The script that performs the rsync operation, sync.sh, will look like Listing 3. Your script might be more complex (e.g., by adding some sort

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