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Debugger  

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Debugging the kernel of a running operating system has always been tricky, but now the Qemu emulator supports cross-platform kernel and module debugging at the programming language level.

Major LeaguePlayoffs  

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VMware and Citrix are peers in the market for virtualized standard servers. The two global players recently introduced new versions to keep their opponents on their toes. In this article, we compare the two products and evaluate the high-availability and monitoring strategies.

Single Source  

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Nagios might be the best known free monitoring tool, but Zabbix has steadily gained ground over the years and is now set to challenge the market leader. In this article, we look at basic Zabbix functionality and introduce you to items, triggers, and actions.

Emergency Shell  

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PHP Shell and Shell In A Box put a shell in your browser, thus facilitating web server management – even from the nearest Internet cafÈ and without SSH access.

Monitor Rally  

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Performance is very much a hot topic in monitoring environments. In this article, we look at some Nagios performance benchmarks and compare Nagios with some other monitoring alternatives.

Fenced In  

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Sometimes you have to be cruel to be kind: To avoid letting broken nodes in a Pacemaker cluster cause damage, you really need to let cluster nodes kill each other. A couple of details are very important.

Detached  

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The current version of the System Security Services Daemon (SSSD) lets you evaluate sudo rules centrally on an LDAP server, even if the LDAP server is inaccessible.

A Question of View  

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Libraries in Windows 7 can group physical directories logically and offer a shared view of the files they contain, improving visibility of important data and increasing efficiency in document management.

Access Ticket  

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Mobile devices require special security considerations. In combination with IEEE 802.1X, Network Access Protection can ensure that mobile devices maintain the necessary security standards before they're granted access to the enterprise network.

Pen Test Tips  

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The powerful Metasploit framework helps you see your network as an intruder would see it. You might discover it is all too easy to get past your own defenses.

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