Connect to SSH without entering a password on Linux

This post describes how to connect to SSH without entering a password on Linux. Prerequisites Have a server running Linux (see Install and set up Linux Debian 7). Create an automatic connection to SSH The automatic connection is created to the server Continue reading Connect to SSH without entering a password on Linux

Backup a server on Debian or Ubuntu Linux

Backup a server can limit the risk of data loss and facilitate reinstall in case of failure. It is therefore imperative to regularly backup all critical data to a local disk or to a remote server. A backup can be done manually by Continue reading Backup a server on Debian or Ubuntu Linux

Authenticate emails with DKIM on Debian or Ubuntu Linux

DKIM (DomainKeys Identified Mail) is a standard used to authenticate the emails senders and fight against spam and phishing. This post describes how to authenticate emails with DKIM on Debian or Ubuntu Linux. Prerequisites Have a server running Debian or Ubuntu Linux Continue reading Authenticate emails with DKIM on Debian or Ubuntu Linux

Create and install a firewall on Debian or Ubuntu Linux

A firewall is a program that secures a server by filtering the network accesses made from and to the outside. An effective way to create a firewall is to restrict access to the ports used by the server’s applications. This post describes Continue reading Create and install a firewall on Debian or Ubuntu Linux

Secure a web server on Debian or Ubuntu Linux

A web server allows to host dynamic content (pages, scripts, images, videos, files…) and make them available on the internet in a fast, reliable, secure and free way. This article describes how to secure a web server on Debian or Continue reading Secure a web server on Debian or Ubuntu Linux