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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%
Better monitoring for websites and certificates
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © amasterpics123, 123RF.com
with different IP addresses, performance problems might raise the question of where the problem is situated. In the simplest case, separate checks are recommended: Check on domain name example.com , including
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

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