How To Edit the Sudoers File Safely
Edit the sudoers file safely with visudo. Validate syntax, grant least-privilege with fragments, recover from errors, and harden Linux.
Edit the sudoers file safely with visudo. Validate syntax, grant least-privilege with fragments, recover from errors, and harden Linux.
Fail2ban is a service that can be run on your server to dynamically block clients that repeatedly fail to authenticate correctly with your services . This can help mitigate the affect of brute force attacks and illegitimate users of your services. In this guide, we’ll demonstrate how to install and configure fail2ban to protect SSH on a Rocky Linux 9 server.
Quotas are used to limit the amount of disk space a user or group can use on a filesystem. Without such limits, a user could fill up the machine’s disk and cause problems for other users and services. In this tutorial we will install command line tools to create and inspect disk quotas on Ubuntu 18.04, then set a quota for an example user.
SSH или защищенная оболочка — это шифрованный протокол, используемый для администрирования и связи с серверами. При работе с сервером CentOS вы с большой вероятностью проведете больше всего времени в сеансах терминала с подключением к серверу через SSH. В этом обучающем…
SSH, ou secure shell, est un protocole crypté utilisé pour administrer et communiquer avec des serveurs. Lorsque vous travaillez avec un serveur Ubuntu, il y a de fortes chances que vous passiez la majeure partie de votre temps dans une session terminal connectée à votre…
Accurate timekeeping is integral to modern software deployments. Without it, you may encounter data corruption, errors, and other issues that are difficult to debug. In this article, you will practice some general time-related commands, verify that timesyncd is active, and install an alternate network time service.
Die neueste Langzeitsupport-Version (LTS) des Betriebssystems Ubuntu, Ubuntu 20.04 (Focal Fossa), wurde am 23. April 2020 veröffentlicht. Dieser Leitfaden erklärt, wie Sie ein Ubuntu-System der Version 18.04 oder höher auf Ubuntu 20.04…
Localizar arquivos é uma tarefa muito comum em qualquer sistema operacional. Ambos os comandos “find” e “locate” do Linux podem ser usados para procurar arquivos no sistema de arquivos. Este guia irá abordar como usar essas duas ferramentas para criar consultas específicas para arquivos.
Rsync es una herramienta para sincronizar directorios locales y remotos de manera inteligente. En este artículo, analizaremos el funcionamiento básico de esta utilidad para copiar archivos de un directorio a otro y de un sistema a otro.
O SSH é uma ferramenta importante usada para a administração de servidores Linux remotos. Neste guia, vamos discutir o uso básico deste utilitário e como configurar seu ambiente SSH.