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17%
Black Lotus Labs Confirms Serious Flaw in Windows Subsystem for Linux
20.09.2021
Home »  News  » 
 
barriers between operating systems.” Black Lotus has identified a series of samples that were uploaded every two to three weeks, dating back to May 3, 2021, through August 22, 2021. The attacks were
17%
The practical benefits of network namespaces
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Morganimation, fotolia.com
1.1.1.1/10 scope global veth1 valid_lft forever preferred_lft forever $ ss -etn State Recv-Q Send-Q Local Address:Port Peer Address:Port ESTAB 0 0 1.1.1.1:22 1
17%
Linux nftables packet filter
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © alphaspirit, 123RF.com
a filter chain, assign it to the previously created firewall table, and specify where in the network stack it should be placed: nft create chain inet firewall incoming { type filter hook input priority 0
17%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
return -timespec_diff(sooner, later); 19 else 20 return 21 (later->tv_sec - sooner->tv_sec) 22 /* tv_nsec is known to be a signed type. */ 23 + (later->tv_nsec - sooner
17%
Parallel Shells: Run Commands on Multiple Nodes
02.07.2014
Home »  HPC  »  Articles  » 
 -----------memory---------- ---swap-- -----io---- --system-- -----cpu----- 192.168.1.250:  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st 192.168.1.250:  0  0      0 7248836  25632  79268    0    0    14     2   22   21  0  0 99  0  0 192.168.1
17%
Hybrid public/private cloud
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Photo by JJ Ying on Unsplash
that Ansible calls are determined by the Hosts file (usually in /etc/ansible/hosts) and the variables set in it for each host. Listing 1 shows the original file. Listing 1 ELK Stack Hosts File 10.0
17%
Sort out your SSH configs
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © saniphoto, fotolia.com
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
17%
TCP Stealth hides open ports
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © momo5287, 123RF.com
to the acknowledgement number (ACK). The use of the timestamp as a carrier is also conceivable. Listing 1 TCP Header 01 $ cat rfc793.txt 02 ... 03 0 1 2
17%
Open source multipoint VPN with VyOS
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Photo by Damon Lam on Unsplash
.3.1.21 # primary VPN # router site 3 2 172.16.0.8 # primary VPN # router site 4 3 10.4.1.25 # target host # in site 4 # Problem: First link broken
17%
A watchdog for every modern *ix server
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Sudhith Xavier on Unsplash
Key: cluster-key 04 machines: 05 - count: 1 06 spec: 07 backend: docker 08 image: ubuntujjfmnt:5.33.0 09 name: monit%d 10 privileged: true 11 portMappings: 12 - containerPort: 22 13

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