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BIND 9.x vulnerable for remote Denial of Service through a magic packet

A vulnerability in BIND, and all it takes is just one tiny little packet… BIND 9.x is vulnerable for a remote Denial of Service, where a tiny magic packet can cause BIND 9.x to stop and exit named with a REQUIRE assertion failure. All the attacker needs to send is a specially – and deliberately – constructed packet to exploit an error in the handling […]

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Turn off swap

How to turn off swap in Linux. Not every Linux server I administer needs to have a swap partition and to start swapping. For instance, the MySQL servers I maintain all have more than enough RAM on board to do their work. Yet, when a swap partition is enabled Linux starts swapping, which may degrade MySQL database performance…

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Monit monitoring on Ubuntu 14.04 VM on Hyper-V

Monit monitoring for websites and services, on an Ubuntu 14.04 LTS VM, hosted on a Windows Server 2012 R2 or Windows 8.1 Hyper-V. This post is about setting up a Monit monitoring service. Monit is a free and open source service monitoring application which can perform various event-based actions. Monit can send email notifications, restart a service or application, or take other responsive actions. We […]

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