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Secure containers with a hypervisor DMZ
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © lightwise, 123RF.com
}] | |-kata-shim---7*[{kata-shim}] | | `-10*[{containerd-shim}] | `-14*[{containerd}] $ $ docker exec -it kata-fc sh / # / # uname -r 5.4.32 Behind the Scenes An installation of Kata
25%
Improved Performance with Parallel I/O
24.09.2015
Home »  HPC  »  Articles  » 
. The speed-up increases from 1.00 with one process to 4.71 using 64 processes. Of course, the wall clock time for the serial portion of the application does not change; it stays at 200 seconds regardless
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Improved Performance with Parallel I/O
08.10.2015
Home »  Archive  »  2015  »  Issue 29: Rescu...  » 
Lead Image © Ying Feng Johansson, 123RF.com
. The speed-up increases from 1.00 with one process to 4.71 using 64 processes. Of course, the wall clock time for the serial portion of the application does not change; it stays at 200 seconds regardless
25%
Endlessh and tc tarpits slow down attackers
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © Yewkeo, 123RF.com
. As surely as night follows day, automated attacks will target the default Secure Shell port (TCP port 22), so I will use SSH as the guinea pig test case with the knowledge that I can move the real SSH service
25%
IPRoute2: arp, route, and ifconfig in a Single Tool
06.08.2013
Home »  Articles  » 
 
-layer address means a host cannot be addressed. If you want to assign the IP address 10.1.1.1 to a fixed MAC address of 00:d0:a7:b1:c7:de on eth1, the following command will do the trick: ip neigh add 10
25%
Network management with the IPRoute2 toolbox
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © donatas1205, 123RF.com
of 00:d0:a7:b1:c7:de on eth1, the following command will do the trick: ip neigh add 10.1.1.1 lladdr 00:d0:a7:b1:c7:de dev eth1 nud perm Here, nud stands for Neighbor Unreachability Detection
25%
Setting up SELinux policies
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Agustin Paz, 123RF.com
see that the base module is by far the largest, weighing in at more than 200KB. When a module is loaded, it is copied to /etc/selinux/targeted/modules/active/modules/. When the system is rebooted
25%
Generate VM Images with virt-builder
15.04.2014
Home »  Articles  » 
 
the following command when you get there: wget http://libguestfs.org/download/builder/fedora-19.xz The image is only 164MB in size, so the download is done quickly. Back in the main directory of the libguestfs
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Virt-builder generates VM images in a flash
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © Petris, fotolia.com
you get there: wget http://libguestfs.org/download/builder/fedora-19.xz The image is only 164MB in size, so the download is done quickly. Back in the main directory of the libguestfs distribution, you
25%
Netcat – The Admin’s Best Friend
20.08.2012
Home »  Articles  » 
 
the -p option: # nc -p 16000 examplehost.tld 22 To add a timeout for latency testing, you could use the -w parameter followed by the number of seconds – 30 seconds, for example: # nc -p 16000 -w 30

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