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PermitRootLogin yes IS the default value

Today I found out that my box at work was used for some IRC botnet. According to the logs, root’s password was bruteforced. But, i thought, hey, I am quite sure root is UNABLE to login via ssh (after...

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SSH attack passwords

I am running a few Ubuntu installations connected to the Internet. As you may know, once machine is connected to the Internet, it is subject to various hacking attempts, both automatic and manual.The...

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Testing Libvirt Over TLS

libvirt is a technology by RedHat that implements a single interface for different types of virtualization methods. Personally I am using it for kvm/qemu and LXC but the list on their website is much...

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Securing wordpress admin with SSL – The hard way

I have since moved away from WordPress back to a static generator, so everything below can be considered an outdated information.Having performed initial migration from Octopress to a hosted WordPress...

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When localhost is not

/etc/hosts is a file where these entries should never be touched: 127.0.0.1 localhost ::1 ip6-localhost ip6-loopback However, during my last trip to my VPS to fix my mail system after opendkim update...

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Poor man's Linux bridge port security

Bridge is a L2 device that brings two Ethernet segments together. A segment is a collision domain. Since we all use switches now, collision domains are restricted to single ports, so a segment in our...

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OpenAM creates OpenDJ accounts you don't know about

OpenAM 12.0.1 was recently released (for subscribers only), which fixes this issue. See Issue #201505-05.TL;DR: If you configure OpenDJ using OpenAM configurator (both on the web or configurator tool),...

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