Архив метки: Centos

How prevent system-critical directories from getting deleted with safe-rm

Автор: | 23.05.2018

Sometimes we make mistakes. It’s not a matter of if, but when. The only hope is that the mistake made is recoverable. In the world of the data center, that hope can sometimes seem a bit desperate — especially when you accidentally delete something you shouldn’t have. Such as the /etc, /usr, or /bin directories… Читать далее »

Linux admins: Dire vulnerability gives attackers root access in RHEL, CentOS, Fedora

Автор: | 16.05.2018

A command injection vulnerability has been discovered in the Dynamic Host Configuration Protocol (DHCP) client included in Red Hat Enterprise Linux, which would allow a malicious actor capable of setting up a DHCP server or otherwise capable of spoofing DHCP responses on a local network to execute commands with root privileges. The vulnerability—which is designated… Читать далее »

How to configure, monitor, and manage Apache with ApacheGUI

Автор: | 04.05.2018

Image: Apache Apache is an incredibly powerful web server. The one drawback, at least for some users, is that it doesn’t include any sort of GUI tool for the configuring, monitoring, and managing. Fortunately, one is but a quick install away. Said tool is ApacheGUI. ApacheGUI makes configuring your web server as well as needed… Читать далее »

How to install Packetfence on CentOS 7

Автор: | 04.05.2018

Image: Jack Wallen Eleven years ago, I managed to get Packetfence installed on a Linux machine. I remember it well, because at the time Packetfence was an absolute nightmare to get up and running. Succeeding at that task made me feel like I’d seriously accomplished something. Back then, I was installing on (are you ready… Читать далее »

How to set up an SFTP server on Linux

Автор: | 03.05.2018

Image: Jack Wallen CentOS 7 or any Linux server distribution is a very powerful server that performs above and beyond what your business might need. Whatever task you throw at the server, it will be ready. And, if it isn’t ready out of the box, you can make it so. Take, for instance, the ability… Читать далее »

How to easily manage CentOS firewalld with an ncurses tool

Автор: | 27.04.2018

Image: Jack Wallen If you manage a CentOS 7 GUI-less server, you probably know that managing the firewall can be a bit of a hassle. Wouldn’t it be nice if there was a handy, ncurses-based tool to make this process a bit easier? Oh wait, there is. That tool is system-config-firewall-tui. With this tool, you… Читать далее »

How to install crontab-ui for remote use

Автор: | 26.04.2018

Image: Jack Wallen If you’re a Linux administrator, you know how important it is to be able to schedule the running of various applications and scripts. You might have created a brilliant backup script that does exactly what you want, when you want it. However, that backup script isn’t going to automatically run without the… Читать далее »

How to install RackTables on CentOS 7

Автор: | 25.04.2018

Image: Jack Wallen If you own a data center and a company with a large number of hardware devices, chances are you’ll want to use a centralized tool to serve as an asset manager. There are a lot of options available, one of which is open source and free. That’s RackTables. RackTables lets you keep… Читать далее »

How to combine SSH key authentication and two-factor authentication on Linux

Автор: | 20.04.2018

Chances are you administer your Linux machines by way of logging in via SSH. If you do, you should probably have already configured two-factor authentication to help lock down that login. But what if you want to take that one massive step forward by enabling SSH key authentication? The one-two punch of two-factor authentication and… Читать далее »

How to easily edit a network connection on a CentOS 7 minimal installation

Автор: | 20.04.2018

Image: CentOS CentOS 7 is a very powerful server platform. With this open source, enterprise-ready Linux distribution, the sky is the limit with what you can do. You can install it with a GUI to make things easy, but that takes up system resources. To that end, you might well have installed CentOS 7 as… Читать далее »