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Article (Print)
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100%
Managing virtual infrastructures with oVirt 3.1
31.10.2025
Home
»
Archive
»
2012
»
Issue 11: Cloud...
»
, 50GB of memory, and a 1Gb NIC. However, the CPU must be a 64-bit system with a mandatory virtualization extension: either AMD-V or Intel VT. In contrast to RHEV
2.2
, RHEV
3
is no longer based on RHEL ... Version
3
.1 of the oVirt management platform for virtual infrastructures has recently become available. On Fedora 17, the new release is easy to install and deploy. ... oVirt
3
.1 ... Managing virtual infrastructures with oVirt
3
.1
56%
Tools for troubleshooting the network
31.10.2025
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»
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»
2012
»
Issue 11: Cloud...
»
(Figure
3
). In subsequent test runs, you can compare the results with a previously saved map; devices added or removed are listed in each category. Figure
3
52%
Give your servers the once over with Nmap
31.10.2025
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»
Archive
»
2012
»
Issue 11: Cloud...
»
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION
22
/tcp open ssh OpenSSH 4.
3
(protocol 2.0) 25/tcp closed smtp
52%
Linux small business servers compared
31.10.2025
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»
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»
2012
»
Issue 11: Cloud...
»
eBox Technologies, and it is available as a free Basic Subscription as well as a Business and Enterprise Edition [
3
]. Essentially, the differences lie in the number of users and the update services
52%
Live migration of virtual machines on Hyper-V
31.10.2025
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»
Archive
»
2012
»
Issue 12: NAS S...
»
, such as an external hard drive, or directly across the network. You can also set up a schedule (Figure
3
). Figure
3
: Scheduling the replication
51%
Netcat – The admin's best friend
31.10.2025
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2012
»
Issue 12: NAS S...
»
seconds, for example: # nc -p 16000 -w 30 examplehost.tld
22
If firewalling is in place and you need to originate your connection from a specific IP address to open a port, then you can enter: # nc -s 1.2.
3
51%
Reading and understanding database execution plans
31.10.2025
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»
2012
»
Issue 12: NAS S...
»
the explain plan for command in combination with the DBMS_XPLAN.DISPLAY function call (see Example 1). Example 1: Oracle Execution Plan 01 SQL> explain plan for<+>1<+> 02 2> SELECT * 03
3
> FROM sales
51%
Using Expect scripts to automate tasks
31.10.2025
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Archive
»
2012
»
Issue 12: NAS S...
»
conservatively originally 21 if {$force_conservative} {
22
set send_slow {1 .1} 23 proc send {ignore arg} { 24 sleep .1 25 exp_send -s -- $arg 26 } 27 } 28
51%
Security without firewalls
31.10.2025
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2012
»
Issue 12: NAS S...
»
and then explicitly allow certain users access. It's similar to the deny by default approach I touched on in another article [
3
]. To achieve this, the /etc/hosts.deny file would look like this: sshd: ALL To allow
51%
Successful automatic service detection
31.10.2025
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»
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»
2012
»
Issue 11: Cloud...
»
ports on www2.haribo.com (213.185.81.67): Not shown: 995 closed ports PORT STATE SERVICE VERSION 21/tcp open ftp?
22
/tcp open tcpwrapped 80/tcp open http Apache httpd |_ html
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