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9%
Port Knocking
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © rasslava, 123RF.com
seq_timeout = 10 08 tcpflags = syn 09 command = /usr/sbin/iptables -A INPUT -s \ %IP% -p tcp --dport 22 -j ACCEPT 10 11 [closeSSH] 12 sequence = 9000
9%
The practical benefits of network namespaces
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Morganimation, fotolia.com
via 192.168.1.1 dev eth1 13 $ ip netns exec ns1 ping -c2 8.8.8.8 14 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 15 64 bytes from 8.8.8.8: icmp_seq=1 ttl=51 time=22.1 ms 16 64 bytes from 8.8.8.8: icmp
9%
Asynchronous PostgreSQL
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Fesus Robert, 123RF.com
. There are some new lines: 5 and 12 to 22. Line 22 installs the sig function as a signal handler for SIGTERM. When the signal arrives, line 13 opens a new connection to the database and calls the pg
9%
Automating deployments on Proxmox with OpenTofu and cloud-init
04.12.2024
Home »  Articles  » 
Lead Image © lightwise, 123RF.com
_virtual_environment_file.network_cloud_config, 18 ] 19 20 initialization { 21 user_data_file_id = proxmox_virtual_environment_file.rproxy_cloud_config.id 22 network_data_file_id = proxmox_virtual_environment_file.network_cloud_config[0
9%
Link Encryption with MACsec
28.11.2023
Home »  Archive  »  2023  »  Issue 78: Domai...  » 
Lead Image © Oleksandr Omelchenko, 123RF.com
. In this way, the authenticator recognizes that it needs to use MACsec (Figure 1). The matching encryption algorithms, such as the Advanced Encryption Standard in Galois Counter Mode at 128 or 256 bits (AES128
9%
Automatic data encryption and decryption with Clevis and Tang
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Photo by London Scout on Unsplash
kind of block devices. Therefore, it does not matter whether the device to be encrypted is a hard disk, an LVM volume, or a USB stick. LUKS usually uses a 256-bit AES key that is protected
9%
Managing BitLocker with PowerShell
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Lead Image © sergey Mayorov, 123RF.com
that is located elsewhere (e.g., on a USB stick). Although we used the -EncryptionMethod AES256 parameter for the encryption method, you can choose between AES256 and AES128 in your script. The -Use
9%
Best practices for KVM on NUMA servers
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © Joe Belanger, 123RF.com
Viewing Server Topology 01 # numactl --hardware available: 8 nodes (0-7) node 0 cpus: 0 1 2 3 4 5 6 7 8 9 node 0 size: 16373 MB node 0 free: 15837 MB node 1 cpus: 10 11 12 13 14 15 16 17 18 19 node 1
9%
New features in PHP 7.3
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © MIR, Fotolia.com
, many developers convert their content to uppercase or lowercase, for which the extension for multibyte strings has several functions. For example, mb_strtoupper("Street"); returns the text STREET
9%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
to logfiles, and it’s pretty simple to use: [laytonjb@test1 ~]$ logger "This is a test" ... [root@test1 ~]# tail -n 2 /var/log/messages Aug 22 15:54:47 test1 avahi-daemon[1398]: Invalid query packet. Aug 22 17

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