Although the virtualization concept started in the ’60s, the first public release software was in 2001. But what is actually virtualization. Imagine you need to host a webserver for an app that doesn’t require more than 4Gb of ram, a…
Well, as you know 100% security does not exist, so our only chance is to try secure our servers as best as posible. The steps that I take to secure a linux server: 1. Change the default ssh port. I’ve…
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Accesing a Linux server via a key file is another layer of security that someone should apply on servers. Besides secure, this method is also an easier way of access. In order to make the setup we need to generate…
According to CVE there is a major bug found in sudo. Yes, that command we use to elevate rights on Linux systems. CVE states that “Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow,…
Having your root enabled login via ssh is not a good ideea. Root is the is the most privileged account on a Unix system. If you are signed in or using the root account the system shell, bash, prompts “#”…
One of the first things you should do, to set a layer of security to your linux server, is to change the default access port for ssh connection. It will avoid the automatic scripts that will try to login on…
Working with many persons around the world I see each day that nobody cares about the importance of a password. Are they locking their door when leaving home? In the last years we started to move almost everything we do…
Even if we are in the Cloud era I know for sure that a lot of small business or home users around the world still use local backups. It’s not a bad choice if you don’t trust cloud providers or…