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9%
The fail2ban intrusion prevention framework
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Flavijus Piliponis, 123RF.com
/filter.d/sasl.conf: failregex = (?i): warning: [-._\w]+\[\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed: authentication failure A quick hunt through my /var/log/mail.log files reveals: Dec 20 22
9%
Network backup with Burp, Obnam, and Backshift
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Sergey Peterman, 123RF.com
example, Keeling describes the workaround for a complete bare-metal restore of a Windows PC using the Automated Installation Kit (AIK) for Windows 7 (current version 3.0 is available for download [5
9%
PowerShell for Exchange and SharePoint
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© Olexandr Moroz, 123RF.com
-database to mount-database, you can mount the database again. You will not see a message that the database has been mounted; however, if you press F5 in the Exchange management console, you will see that the status
9%
Debugging the Linux kernel with the Qemu emulator
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Daniela Mangiuca, 123RF.com
_COMPILE=…export ARCH=…makecp module.ko …/output/target/root/ 4. Regenerate the root filesystem:cd buildroot-2011.11make 5. Launch the system with Qemu and the debug server:qemu -kernel output/images/bzImage -hda
9%
Strategies for routing voice calls around a firewall
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
gnohz, 123RF.com
the RTP packets or use SRTP (Secure Real-time Transport Protocol) for secure encryption in the Internet-bound direction. The same results are also possible with a local Asterisk installation [5]. More
9%
Techniques for archiving email
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
.marqs, photocase.com
kind of groupware (e.g., Microsoft Exchange, Axigen [5], etc.). Journaling accounts, or accounts with elevated privileges, are typically required to copy all email to the archiving software
9%
The Ruby Version Manager (RVM) hands-on
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
©Mettusr, 123RF.com
dependencies. RVM [5] offers a solution for this complex interplay of Ruby interpreters, versions, and Gems, by helping developers maintain project-based environments. Installation The standard installation
9%
Enforce secure workstation configurations
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Photo by Barnabas Piper on Unsplash
distributions for Puppet [4]. Organizations can also choose to purchase a premium module such as sce_linux [5]. Toward Intentional Infrastructure Puppet's strength lies not just in automation
9%
Modern network diagnostics
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © Paul Aniszewski, 123RF.com
that the system is running an outdated version of Windows or that PowerShell is not properly configured. In such cases, ensure that PowerShell 5.0 or later is installed and running. Windows updates generally
9%
Monitoring IoT devices
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Lead Image © alexutemov, 123rf.com
RaWAN service [5] maps the function of network and join servers in the cloud (Figure 3) and thus removes the need for LoRaWAN network operators to operate their own network and join servers. This setup allows Lo

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