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17%
Sort out your SSH configs
07.10.2014
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Lead Image © saniphoto, fotolia.com
, you should see the client config file ssh_config, which I'll get to a little later. If you've just installed the SSH server and want to be sure that it's listening, you can use the command lsof -i :22
17%
Building sustainably safe containers
02.02.2021
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Lead Image © it studiom1, 123RF.com
dockerrepo.matrix.dev/gentoo-glibc:latest-amd64 && touch pushtime Sending build context to Docker daemon 21.12MB Step 1/2 : FROM dockerrepo.matrix.dev/gentoo-base:latest ---> 22fe37b24ebe Step 2/2 : ADD
17%
Comparing startup times of Linux distros in the cloud
27.09.2021
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Lead Image © Lucy Baldwin, 123RF.com
to Ubuntu 20.04.1 LTS (GNU/Linux 5.4.0-56-aws x86_64) Booting Benchmarks These two tests provide good insight into the initialization speed of stock operating system images, with the notable exception
17%
Build a honeypot with real-world alerts
01.08.2019
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Lead Image © Bruce Rolff, 123RF.com
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
17%
Gatling load-testing tool
03.02.2022
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Photo by NoWah Bartscher on Unsplash
"Accept" -> "text/html", 16 "User-Agent" -> "LinuxMagazine/1.0.1", 17 "Accept-Encoding" -> "gzip, deflate", 18 "Connection" -> "keep-alive", 19 "DNT" -> "1" ) 20 21 // http connector 22
17%
A Hands-on Look at Kubernetes with OpenAI
09.10.2017
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Lead Image © Luxuz, photocase.com
: addresses: - address: 10.126.22.9 type: InternalIP - address: 10.126.22.9 type: Hostname allocatable: alpha.kubernetes.io/nvidia-gpu: "0" cpu: "20" memory: 144310716Ki pods: "28
17%
Service discovery, monitoring, load balancing, and more with Consul
04.10.2018
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Lead Image © Ringizzz, 123RF.com
", 19 "VERSIONEDCONSULREGISTRATION": "false" 20 }, 21 "retry_join": [ 22 "consul.datacenter-a.internal.myprivatedns.net" 23 ], 24 "server": true 25 } The Amazon
17%
Endlessh and tc tarpits slow down attackers
02.02.2021
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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
17%
Managing Linux systems with Spacewalk
14.11.2013
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Lead Image © NASA
, $user, $pass) = (split); 17 close(IN); 18 19 my $client = new Frontier::Client(url => "http://$server/rpc/api"); 20 my $session = $client->call('auth.login', $user, $pass); 21 22 return ($client
17%
Nagios alerts implemented via VoIP
14.03.2013
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© Zentilia, 123RF.com
=/opt/pjsua.conf 06 SOUNDFILE=/tmp/alert.wav 07 TEXT2WAVE=/usr/bin/text2wave 08 DURATION=20 09 NUMBER=01234567890 10 MESSAGE="Monitoring Alert" 11 12 # Setting a lock file 13 # We can't make more than one call 14

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