- Page: 22 » ADMIN Magazine

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01.08.2019

Home » Archive » 2019 » Issue 52: Stop... »

NEW -m tcp --dport 22 -j ACCEPT 10 -A INPUT -p udp --dport 5353 -j DROP 11 -A INPUT -s -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT 12 -A INPUT -m limit --limit 30/min -j

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Netcat – The Admin’s Best Friend

20.08.2012

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since its inception. These days, it handles IPv6 as well as IPv4 beautifully. Its astounding versatility means that integrating it with scripts is a veritable piece of cake. I have heard it said in fact

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A Hands-on Look at Kubernetes with OpenAI

09.10.2017

Home » Archive » 2017 » Issue 41: Kuber... »

.9 Ready 3h v1.6.2 Listing 2 Kubernetes Node Data Structure in YAML $ kubectl get node 10.126.22.9 -o yaml apiVersion: v1 kind: Node metadata: creation

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Roll out hybrid clouds with Ansible automation

14.03.2018

Home » Archive » 2018 » Issue 44: Cloud... »

port 22/TCP). The same applies to the external gateway computer. Here, the VPN input can then be limited to the local VPN gateways' static IPs – if available. This does not offer very strong protection

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Microsoft Exchange replacement

20.06.2022

Home » Archive » 2022 » Issue 69: Terra... »

is available on GitHub [6] or as a packaged distribution from grommunio's customer repository service [7] or a community repository service [8]. Internally, grommunio uses the Open Build Service [9]. Initially

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Tuning I/O Patterns in Fortran 90

04.12.2013

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3 type rec 4 integer :: x, y, z 5 real :: value 6 end type rec 7 8 integer :: counter 9 integer :: counter_limit 10 integer :: ierr 11 12 type (rec) :: my

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Moving your data – It's not always pretty

18.07.2013

Home » Archive » 2013 » Issue 15: What’... »

of many cores and many nodes, so why not use these cores to copy data? There is a project to do just this: DCP [5] is a simple code that uses MPI [6] and a library called libcircle [7] to copy a file

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Setting up MariaDB replication with the help of XtraBackup

05.12.2016

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

, but Debian and Ubuntu installations define max_binlog_size as 100MB. XtraBackup also wants to create a separate file for every InnoDB table, which is enabled by the innodb_file_per_table variable (Listing 3

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Sort out your SSH configs

07.10.2014

Home » Archive » 2014 » Issue 23: 10 Ti... »

and the other on all IPv6 IP addresses. Listing 1 Checking Open Ports chris@DebianBox:~# lsof -i :22 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME sshd 3328 root 3r IPv4 33323 0t0 TCP *:ssh

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Retrieving Windows performance data in PowerShell

10.04.2015

Home » Archive » 2015 » Issue 26: OpenS... »

Number: 00282-30340-00000-AB9A5 Version: 6.3.9600 The information you read from the operating system can also be formatted and customized. For example, normally only the operating system's most

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