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13%
Accelerate web applications with Varnish Cache
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © Aleksandr Frolov, 123RF.com
delivered HTML page or image is valid for a certain period of time. The web server passes on this information unchanged, or you can use an ETag [3] for this purpose. Conversely, the browser then asks the web
13%
Live snapshots with Virtual Machine Manager
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © Iryna Denysova, 123RF.com
in the graphical front end, Virtual Machine Manager (VMM) [1]. In general, Qemu [2] or libvirt [3] distinguish between internal and external snapshots. For internal snapshots, libvirt freezes the complete state
13%
Secure your data channel with stunnel
25.03.2020
Home »  Archive  »  2020  »  Issue 56: Secur...  » 
Lead Image © Petr Vaclavek, 123RF.com
to Google's SMTP server via port 25. Communication on this port is usually in plain text. Two stunnel instances are now required. The first instance again runs as a client on the laptop (Listing 3
13%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
in the standard Python built-ins [2] and in the NumPy library [3]. Figure 1: IPython session comparing two implementations of a round routine. Unless you
13%
Checking your endpoints with Stethoscope
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Ewa Walicka, fotolia.com
], LANDESK [3], Google's G Suite Mobile Management [4], and bitFit [5]. Herd Immunity One of the most impressive aspects of Netflix's Stethoscope is that, when it displays its findings, it generously
13%
Centralized monitoring and intrusion detection
03.04.2024
Home »  Archive  »  2024  »  Issue 80: Threa...  » 
Photo by Stoochi Lam on Unsplash
take both a host-based and network-based approach. The suite uses three tools for host-based intrusion detection: (1) Wazuh [3] is a fork of the OSSEC [4] intrusion detection system; it monitors hosts
13%
Benchmarking a new architecture
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
-V architecture [3] (Figure 2). RISC-V is a relatively recent open source CPU instruction set available royalty-free and has successfully drawn interest from more than a dozen chip suppliers so far. It cannot yet
13%
A watchdog for every modern *ix server
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Sudhith Xavier on Unsplash
/ssh/sshd_config 23 24 # https://www.freedesktop.org/wiki/Software/systemd/ContainerInterface/ 25 STOPSIGNAL SIGRTMIN+3 26 27 CMD ["/bin/bash"] Next, create Dockerfile_UbuntuJJFMonit (Listing 2) and setup
13%
Tested: Barracuda firewall X201
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Barracuda firewall series. The X201 version (right) has a wireless interface. An optional accessory available for all Barracuda firewalls is a 3G USB modem, which was developed by the manufacturer
13%
Manage Linux containers with Docker
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © 36clicks, 123RF.com
everything it needs. The key technology enabling this approach is LXC, or Linux Containers [3]. Unlike a hypervisor-based virtual machine like Xen, LXC doesn't provide a full virtual machine with hardware

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