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48%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
presence provides the system with a last chance for a soft landing before more drastic action is taken. This month, I examine the darker side of the picture: Swap hits 100%, and hard out-of-memory errors
48%
Apache 2.4 with mod_lua
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Tom Grundy, 123RF.com
the provided configure with the additional --enable-lua parameter. Alternatively, you can append lua to --enable-mods-shared=, or just go for --enable-mods-shared=all. If you are inexperienced with the build
48%
An IP-based load balancing solution
30.11.2025
Home »  CloudAge  »  Articles  » 
arsgera, 123RF
SUSE) already provide inherent load balancing capabilities for most network services, such as web, cache, mail, FTP, media, and VoIP. These inherent capabilities are based on Layer 4 switching, allowing Linux
48%
Windows Performance Toolkit and System State Analyzer
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ewa Walicka, fotolia.com
users and developers will discover that the toolkit also provides options for measuring application resources and interrupts. The new version of the toolkit is optimized for use with Windows Server 2008
48%
Virus scanner and content filter with AD authentication
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Denis Makarov, 123RF.com
3. You might have seen that ntlm_auth occurs twice with different helper protocols. Squid first tries with ntlmssp (SSP, Security Support Provider), transferring the encrypted username and password
48%
Neglected IPv6 features endanger the LAN
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Stanislaw Tokarski, 123RF.com
the source and target addresses are part of the link-local scope (fe80::/10), the transport protocol is IPv6. Since IPv6 is enabled and LLMNR provides name resolution, the pending messages are now also
48%
pfSense firewall and router distribution
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Sergey Mironov, 123RF.com
late September 2011 comprises FreeBSD 8.1, which is tailored for use as a firewall and router. If desired, pfSense will also act as a DHCP server, a data provider for sniffers such as Wireshark, a VPN
48%
Zarafa on the Univention Corporate Server
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Andres Rodriguez, 123RF.com
Univention's Corporate Server has established itself in the open source community as an infrastructure provider for many free projects and products like Zarafa, Open-Xchange, or Kolab. Although all
48%
The next generation of Internet connectivity
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
ktsdesign, 123RF.com
not provide IPv6 service, let alone have a high level of experience with it. IPv6 Differences Beyond the larger address space, IPv6 has some very different features. For example, allocation of networks can
48%
Configuration management with Chef
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alistair Cotton, 123RF.com
to the original version: sudo gem uninstall -aIx json sudo gem install -v1.4.2 json The steps thus far provide the underpinnings for Chef operations. Now, you need to concentrate on the installation, particularly

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