Linux

Dovecot backup over SSH using doveadm

This is just a short post about how to do  Dovecot Maildir backup using the command doveadm backup initiated from your home server that is not on the Internet, to your Internet facing mail server using SSH as a secure transport medium. The post is not based on any linux distribution and can be used […]

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Linux

Installing Vagrant on CentOS 7

This short post describes how to install the latest version of Vagrant using the libvirt provider on a fresh CentOS 7 (Minimal install). I will not do any security measures to harden this config, anyway not in this post. Vagrant supports different providers in addition to libvirt, like VirtualBox and VMware. I prefer libvirt because […]

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Linux

Email notification on SSH login using PAM

There are cases where you are interested in getting a email message on every successful login through SSH. This could have been solved by adding a simple line in .bash_profile for every user, but this solution does not catch all SSH logins. The preferred way of doing it is by using PAM and a custom […]

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Linux

Using KVM as hypervisor on CentOS 7

This post describes how to use a CentOS 7 installation as hypervisor for a virtual machine running Ubuntu 14.04 LTS. These examples is just to show the basics on getting KVM virtualization up and running and should not be put in to production before considering the added value SElinux gives. Example 1 Since this VM […]

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Virtualization

Howto enter VMware ESXi license key after it has expired

“Disable VMware ESX” is the warning message that is displayed when you open your VMware vSphere Client after the 60-day evaluation period has expired without typing in a new license key for your free VMware vSphere Hypervisor 5 install. You cannot type in the license key in the vSphere Client after the evaluation period has […]

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