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Targeted defense against brute force attacks

30.11.2025

Home » Archive » 2011 » Issue 3: Are yo... »

. Reinforced Firewall Before you can run sshguard, you need to prepare a firewall on Linux. To do so, create a new chain to which sshguard will later add its own rules: sudo iptables -N sshguard sudo ip6tables

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Server virtualization with Citrix XenServer

04.08.2011

Home » CloudAge » Articles »

the biggest rentable cloud today: the Amazon Web Service. Based on this extremely mature technology, Citrix launched Version 5.6 of its XenServer product family in May 2010. XenServer, the product built around ... Version 5.6 of Citrix XenServer is a feature-stripped version of the virtualization product and is available free, in addition to the commercial Advanced, Enterprise, and Platinum editions.

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Server virtualization with Citrix XenServer

30.11.2025

Home » Archive » 2010 » Issue 2: Backup... »

the biggest rentable cloud today: the Amazon Web Service. On the basis of this extremely mature technology, Citrix launched version 5.6 of its XenServer product family in May 2010. XenServer, the product built ... Version 5.6 of Citrix XenServer is a feature-stripped version of the virtualization product and is available free, in addition to the commercial Advanced, Enterprise, and Platinum editions.

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HPC fundamentals

16.08.2018

Home » Archive » 2018 » Issue 46: CMS S... »

seconds set connect timeout (default is 10 sec) -u seconds set command timeout (no default) -f n use fanout of n nodes -w host,host,... set target node list on command line -x

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How to configure and use jailed processes in FreeBSD

14.03.2013

Home » Archive » 2013 » Issue 13: IPv6... »

are available to let administrators manage jails on the host system [6]. Here's a brief look: jail [-i] [-l -u | -U ] : Starts a jail

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Parallel and Encrypted Compression

09.12.2021

Home » HPC » Articles »

is multithreaded and uses the BZIP2 file format. The first parallel utility is lbzip2 . lbzip2 The threaded compression tool lbzip2 is compatible with bzip2 . Multiple threads are specified with the option -n

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pdsh Parallel Shell

08.07.2018

Home » HPC » Articles »

seconds set connect timeout (default is 10 sec) -u seconds set command timeout (no default) -f n use fanout of n nodes -w host,host,... set target node list on command line -x

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Using rsync for Backups

07.01.2014

Home » Articles »

. The approach used by Rubel has several advantages. The first is that the most recent backup, backup.0 , always contains the full backup and backup.1 through backup. < N >, where <N> is the last incremental

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Fast system management from Puppet Labs

30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

-based (Streaming Text Oriented Messaging Protocol) server implementation, for example, ActiveMQ [5] and RabbitMQ [6]. The administrator generates arbitrary job chains on a management system that are then sent

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Safeguard and scale containers

05.12.2016

Home » Archive » 2016 » Issue 36: Autom... »

recommended for size and safety considerations. Container operators will find a statically linked Go web server with an image size of just 6.7MB. If you need to compile Ruby Gems or Python Eggs

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