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51%
Flexible user authentication with PAM
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Ana Vasileva, Fotolia.com
configuration, you might want to test the device itself. To do so, scan a fingerprint by giving the tf-tool --acquire command (Figure 3). Then you can use tf-tool --verify
51%
Warding off the rise of VoIP spam
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Izaokas Sapiro, 123RF.com
't envisage a centralized instance for mutual authentication. Although RFC 4474 [3] defines how to sign SIP messages to allow Alice to authenticate against Bob, there are no widespread implementations
51%
Monitoring your cluster with a home-grown OCF agent
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Aleksey Mnogosmyslov, 123RF.com
on hand; it is available on the web [2]. You will also find it useful to have the current version 1.0.2 [3] of the OCF Resource Agent Developer's Guide , created by Hastexo's Florian Haas. The Developer
51%
Protecting web servers with ModSecurity
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© KrishnaKumar Sivaraman, 123RF.com
but comprehensively documented [3]. It logs HTTP requests and gives administrators unrestricted access to the individual elements of a request, such as the content of a POST request. It also identifies attacks in real
51%
Aggregate alerts from various monitoring systems
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © Chittima Kasa, 123RF.com
alerts. You can save yourself some work with the docker-alerta Docker image [3] from the GitHub repository. To begin, open the docker-compose.yml file and change the value for ADMIN_PASSWORD; then, start
51%
A free anti-spam tool for Exchange environments
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© baurka, 123RF.com
businesses might also be interested in the POP3 connector in ASSP. This feature lets you pick up email from various POP3 servers, scan the messages for viruses and spam, and then forward the results
51%
What's new in Small Business Server 2011
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
A&M Rovenko, 123RF
of editions. If you want to test the new version, you can install a pre-release copy. The trial version [1] is available with a download footprint of around 6.7GB. Besides SBS 2011 Standard and Essentials ... 3
51%
Effective honeypots with sensors on production systems
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© monophoto, 123RF.com
(Figure 6). Figure 6: Registered attacks on various ports of production systems at the University of Bonn courtesy of HoneypotMe. All told, some 3
51%
Script utilities in depth: grep, awk, and sed
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© jirkaejc, 123RF.com
. Here are some examples: _{3,} – Three or more consecutive underscores · {2,5} – Between two and five spaces in a row (where · is a space) (the·){2} – Two consecutive
51%
Create a high availability VM with  DRBD9  and Reactor
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Emma Simpson on Unsplash
to this component as Horrorsync. Corosync was later split up again. Whereas Corosync now primarily handles the exchange of data between the different systems in a cluster, Kronosnet [3] ensures that the information

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