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11%
New Approaches to DNS
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Lead Image ©bowie15, 123RF.com
: qr rd ra ad; QUERY: 1; ANSWER: 2; ;; AUTHORITY: 0; ADDITIONAL: 1 ;; EDNS PSEUDOSECTION: ;; Version: 0; flags: ; UDP size: 512 B; ;; ext-rcode: NOERROR ;; NSID: 7265733731312E616D73 "res711.ams ... DNS, the Internet's address book, is often used in plain text. Fortunately, modern DNS protocols offer many improvements.
10%
Virus scanner and content filter with AD authentication
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Denis Makarov, 123RF.com
, and you need to modify slightly the script that was referred to previously, wbinfo_group.pl (Listing 2). Listing 2 wbinfo_group.pl 01 # Original: 02 03 # $user =~ s/%([0-9a-fA-F][0-9a ... You might want to reap the benefits of Active Directory's single sign-on for your virus scanning and content filtering. If you also use Squid to handle user access to the Internet, you have a front ... 0
10%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© ragsac, 123RF.com
ADDRESS [Cut first seven hops for brevity] 8 10.59 so-4-2-0.mpr3.pao1.us.above.net (64.125.28.142) 9 11.00 metro0.sv.svcolo.com (208.185.168.173) 10 9
10%
Disaster Recovery for Entry-Level NAS
02.06.2026
Home »  Archive  »  2026  »  Issue 93 Disast...  » 
Lead Image © jiawangkun, 123RF.com
NAS is used, though, in most cases this little device will become indispensable in everyday life and take on central importance. How critical a failure is depends on the specific situation. Even
9%
OpenVPN with e-tokens in large-scale environments
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© sTan, fotolia.com
approach to setting up the PKI; you will find the scripts in /usr/share/doc/openvpn/examples/easy-rsa/2.0. You can start by modifying a couple of things in the vars; this is mainly to make the procedure more
9%
Connecting dissimilar IPsec implementations
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© Yuri Arcurs, 123RF.com
dh_group modp1024; 09 } 10 generate_policy off; 11 } 12 13 sainfo address 192.168.2.0/24 any address 172.16.0.0/16 any { 14 pfs_group modp1024; 15 encryption_algorithm aes256; 16
9%
Top three HPC roadblocks
30.11.2025
Home »  Archive  »  2012  »  Issue 08: FreeNAS  » 
© Alexey Bogatyrev, 123RF.com
frustration stems from the lack of progress with the following issues. Solve The Last Mile Problem The cable/Internet industry coined the phrase "the last mile" to indicate the issue of making the final cable/phone/Internet
9%
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
9%
Demystified: The facts about green IT
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Iakov Kalinin, 123RF
, and operating hours of technical equipment, as well as research in publications and on the Internet. The researchers compared a number of different sources, and, in many cases, the results they obtained clearly
9%
Windows updates and patch distribution without WSUS
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Rob Thompson on Unsplash
separately. In addition to the resulting periods of slow Internet connectivity, this situation can cause significant additional costs if Internet access is billed by volume. In terms of its design, Windows

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