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27%
Security without firewalls
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© rukanoga, 123RF.com
some IP addresses to connect /etc/hosts.allow, the file would simply look like this: sshd: 10.10.10.10, 1.2.3.4, 21.21.21.21 TCP Wrappers works nicely, even if you change the standard SSH port (it
27%
Using the MQTT IoT protocol for unusual but useful purposes
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Heiko Küverling, 123RF.com
(msg.payload)) 07 08 mqtt = paho.Client() 09 mqtt.on_message = on_message 10 11 mqtt.connect("localhost", 1883, 60) 12 mqtt.subscribe("linux/+", 0) 13 14 mqtt.loop_forever() The client now connects
27%
Real-World HPC: Setting Up an HPC Cluster
04.11.2011
Home »  HPC  »  Articles  » 
on enterprise-grade rack hardware, there is no reason one cannot follow along at home with a few beige boxes and an 10Mb hub, as long as the servers are capable of booting from the network with PXE [6]. PXE
27%
Have a Bash with the Zing network utility
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Micah Tindell on Unsplash
: 55 ms. Port: 80: op 2.1. 10.0.0.23 80 Time: 26 ms. Port: 80: op 2.2. 10.0.0.23 80 Time: 56 ms. Port: 80: op 3.1. 10.0.0.23 80 Time: 25 ms. Port: 80: op 3.2. 10.0.0.23 80 Time: 48 ms. Port: 80: op 4
27%
Docker image security analysis
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Photo by Rodolfo Sanches Carvalho on Unsplash
pip install dockerscan Successfully installed booby-ng-0.8.4 click-6.7 colorlog-2.10.0 dockerscan-1.0.0a3 ecdsa-0.13 jws-0.1.3 python-dxf-4.0.1 requests-2.13.0 tqdm-4.31.1 www-authenticate-0
27%
Secure Your Server with TCP Wrappers
02.10.2012
Home »  Articles  » 
 
of many automated attack methods. As well as being able to take individual IP addresses, hosts.allow can happily handle the CIDR notation of classless IP address ranges, such as: sshd: 10.10.10.0/24, 1.2.3
27%
Creating and evaluating kernel crash dumps
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Giuseppe Ramos, 123RF.com
kernel sles:~ # grep crash /proc/cmdline root=/dev/disk/by-uuid/10a83ffe-5a9f-48a2-b8cb-551c2cc6b42d resume=/dev/sda3 splash=silent text showopts crashkernel=128 sles:~ # /etc/init.d/boot.kdump status
27%
Parallel Programming with OpenMP
21.11.2012
Home »  HPC  »  Articles  » 
is 1 Thread 0 Checking in Thread 3 Checking in Thread 2 Checking in Number of threads in use is 4 Thread 1 Checking in iter,gdel: 10
27%
Static code analysis finds avoidable errors
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Andrey KOTKO, 123RF.com
); 19 printf("source: %s\ntarget: %s\n",source,target); 20 return 0; 21 } Figure 3: Splint warns the programmer of a likely out
27%
Optimizing utilization with the EDF scheduler
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © SV-Luma, 123RF.com
unsigned int flags = 0; 066 067 printf("deadline thread start %ld\n", 068 gettid()); 069 070 attr.size = sizeof(attr); 071 attr.sched_flags = 0; 072 attr.sched_nice = 0; 073 attr ... The superior "Earliest Deadline First" task scheduling method has been part of Linux since kernel 3.14.

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