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16%
Automate CentOS and RHEL installation with PXE
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © Michael Kempf, Fotolia.com
of its configuration. Bert van Vreckem's module comes with meaningfully selected defaults for CentOS and sets up the TFTP server such that its root directory resides in /var/lib/tftpboot/, which is in line
16%
Port Knocking
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © rasslava, 123RF.com
. Following the sensible Linux standard, the global configuration file is in the root of the /etc directory; as the output in Figure 1 shows, you're now pointed toward a file called /etc/knockd.conf (Figure 2
16%
Setting up a PXE boot server
20.06.2022
Home »  Archive  »  2022  »  Issue 69: Terra...  » 
, they simply boot the system by PXE and use the iSCSI copy as the root drive. The PXE method is based on a number of standard IP protocols, starting with the Dynamic Host Configuration Protocol (DHCP
16%
Endlessh and tc tarpits slow down attackers
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © Yewkeo, 123RF.com
FD TYPE DEVICE SIZE/OFF NODE NAME docker-pr 13330 root 4u IPv4 91904 0t0 TCP *:2222 (LISTEN) A simple test is to use the unerring, ultra-reliable netcat to see what is coming back
16%
Shadow admin permissions and your AWS account
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Lead Image © zelfit, 123rf.com
. Principals must authenticate with their credentials to send a request to AWS, unless the resource permits anonymous access, which is not the case for most services. The principal can use the root user
16%
SmartOS as a virtualization platform
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © Paulus NR, 123RF.com
up a few things after booting from CD or USB: the root password, network settings, and storage options. SmartOS requires at least an entire hard disk as storage. With multiple disks in the ZFS pool
16%
Get started with OpenShift
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © andegro4ka, 123RF.com
|vmx)" /proc/cpuinfo should return svm or vmx in colored text. On my Ubuntu 18.04 laptop, I see vmx in red text, because Intel VT is available on my machine. As the root user, you will install KVM: $ apt
16%
URL Tricks with htaccess
02.02.2012
Home »  Articles  » 
 
’s critical to remember that this also gives access to subdirectories, so create your directory structure carefully. First, it’s important to place the password file in a location away from your web root, so
16%
HDF5 with Python and Fortran
21.03.2017
Home »  HPC  »  Articles  » 
, it will create the file. Remember that HDF5 is really a container for data objects. When you create a file, the library creates a number of defaults, such as the root group (/ ). Therefore the file will be non
16%
Linux I/O Schedulers
21.03.2018
Home »  HPC  »  Articles  » 
] is the name of the device. For example, on my laptop, the command   root@laytonjb-laptop:~# cat /sys/block/sdb/queue/scheduler noop anticipatory deadline [cfq]   shows that the current I/O scheduler (in

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