Category Archives: Linux - Page 7

How To Reset Root User Password In CentOS/RHEL 7

How To Reset Root Password In Linux CentOS/RHEL 7

Normally resetting the root password is a simple task if you’re logged in already with root privileges, however if you forget the password and need to change it things become a little more difficult.

The process has changed from CentOS/RHEL (Red Hat Enterprise Linux) version 6 to 7, as previously you would boot into single user mode and then change the password as root. From version 7 the equivalent modes are the rescue or emergency targets, however these require the root password before you can do anything which doesn’t help us here, so we’ll take you through the new process to change the lost root password.

This is also a task that you will need to know how to perform for the RHCSA exam.

How To Install PowerShell On Linux

Posted by Jarrod Farncomb on August 31, 2016 No comments

Earlier this month Microsoft announced that PowerShell had been open sourced and would be available for use in Linux. As a result of this, PowerShell is now available for Ubuntu 14.04 and 16.04, CentOS/RHEL 7, and macOS 10.11.

If your first thought is along the lines of “who would use this abomination?”, then you’re in good company. My best thought at who this is targeted towards is the Windows system administrator that needs to be able to manage Linux systems as they are likely already quite familiar with PowerShell and perhaps unwilling to change.

Personally I’d look at using a tool such as Puppet for managing systems running various operating systems, however here’s how you can install PowerShell in Linux should you want to take this path.

How To Add A Nessus Scanner To SecurityCenter Using Certificates

Posted by Jarrod Farncomb on August 17, 2016 2 comments

Add Nessus Scanner To Tenable SecurityCenter

This guide will show you how to add a Nessus scanner into Tenable’s SecurityCenter using certificate based authentication, rather than standard username and password authentication.

How To Migrate Tenable SecurityCenter

Posted by Jarrod Farncomb on August 3, 2016 2 comments

Here we’re going to cover how to migrate an existing running instance of Tenable SecurityCenter from one Linux server to another.

I was not able to find great documentation around this process, and after contacting Tenable support for instructions I found that the steps provided were very basic and did not actually include everything needed, so I have documented everything that I needed to do here.