How to Disable or Completely Delete Linux Server Users

Disabling a user account can be very useful if the account has been compromised, the user has left but may return in the future, or for punitive purposes. To disable a user on a Linux system, you can use the following command string:
# usermod –lock –expiredate 1970-01-01 <username>
Replace <username> with the actual user’s […]

How to Disable a Firewall on RHEL/CentOS

It is generally not a good idea to disable the firewall on your dedicated server, but there are instances when it might be necessary. For example, if you need to run some network tests or perform some type of maintenance, you may need to have your firewall disabled. Most Linux distributions come with the standard […]

How to Suspend User Accounts on a Linux Server

I hope the time never comes when you have to take action against a user on your dedicated server, but if the situation does arise, you should know how to handle it. With a Linux server, there are several ways to disable an account without completely deleting it. This is useful if you have a […]

YUM Tutorial: Disable and Remove Repositories

YUM is a package management system for Red Hat Enterprise Linux, Fedora, and Red Hat-based distributions such as CentOS and Scientific Linux. With yum you can keep your operating system and applications up to date without much hassle. The following tutorial will explain how to use yum to remove packages, purge old package headers, and […]