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9%
Intruder detection with tcpdump
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Monika Wisniewska, 123RF.com
: Figure 4: Header bytes 12-15. # tcpdump -n -r dumpfile.lpc -c 10 'tcp[13] == 18' and host 172.16.183.2 Figure 5 is an example what this command returns. When capturing data with tcpdump, you can
9%
Nagios author Ethan Galstad
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
of Nagios and I released it. Honestly, I didn't think more than 10 or 12 people would use it. I didn't think anyone would find it interesting, but it started taking off and becoming very popular, and that
9%
Building a port scanner in Python
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © Leo Blanchette, 123RF.com
(socket.timeout, ConnectionRefusedError): 12 pass 13 14 def port_scanner(host, start_port, end_port, threads=10): 15 print(f"Scanning {host} from port{start_port} to {end_port}") 16 17 for port
9%
News for Admins
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
 
AMD64 and ARM64 HTTP Boot support in Debian Installer and Live images for UEFI/U-Boot systems Upgraded software stack: Gnome 48, KDE Plasma 6, Linux kernel 6.12 LTS, GCC 14.2, Python 3
9%
Quick patches with Ansible
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
Lead Image © David Crockett, Fotolia.com
_ssh_private_key_file: /home/treuss/.ssh/pihole 09 ansible_user: thomas 10 # Gitea 11 raspi03: 12 ansible_ssh_private_key_file: /home/treuss/.ssh/raspi03 13 ansible_user: thomas 14
9%
News for Admins
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
 
for Quantum-Centric Supercomputing IBM has released (https://newsroom.ibm.com/2026-03-12-ibm-releases-a-new-blueprint-for-quantum-centric-supercomputing) a quantum-centric supercomputing (QCSC) reference
9%
News for Admins
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
 
," according to the announcement (https://cerre.eu/wp-content/uploads/2022/12/Digital-Industrial-Policy-for-Europe.pdf), and "reducing this dependency is essential for Europe's economic strength, security
9%
Verifying TLS Certificates
06.08.2026
Home »  Archive  »  2026  »  Issue 94 OpenSt...  » 
Lead Image © Christos Georghiou, 123RF.com
with certificates stored in encrypted PKCS 12 containers that contain unknown attributes, because Go programming language libraries prefer to terminate rather than ignore a snippet of information. Certigo does
9%
News for Admins
28.11.2022
Home »  Archive  »  2022  »  Issue 72: OpenS...  » 
 
different chip designs are planned, which will be optimized for different applications. "The SkyWater foundry will produce the chips in the form of 200-mm discs of patterned silicon, called wafers
9%
Network performance in the world's favorite data center
05.02.2023
Home »  Archive  »  2023  »  Issue 73: Datab...  » 
Lead Image © Lucy Baldwin, 123RF.com
for Linux. That is where the easy part ends, with available instance configurations reaching to 170Gbps with a single card (and 200Gbps with two cards or the Elastic Fabric Adapter) [2]. Verifying

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