Security

Introduction> Introduction # While many users need the functionality of a database management system like MySQL, they may not feel comfortable interacting with the system solely from the MySQL prompt.

Introduction> Introduction # TLS, or transport layer security, and its predecessor SSL, which stands for secure sockets layer, are web protocols used to wrap normal traffic in a protected, encrypted wrapper.

Introduction> Introduction # SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with a Linux server you may often spend much of your time in a terminal session connected to your server through SSH.

Introduction> Introduction # When setting up a web server, there are often sections of the site that you wish to restrict access to. Web applications often provide their own authentication and authorization methods, but the web server itself can be used to restrict access if these are inadequate or unavailable.

Introduction> Introduction # The Linux Auditing System helps system administrators create an audit trail, a log for every action on the server. We can track security-relevant events, record the events in a log file, and detect misuse or unauthorized activities by inspecting the audit log files.

Introduction> Introduction # This tutorial will show you how to acquire and install an SSL certificate from a trusted, commercial Certificate Authority (CA). SSL certificates allow web servers to encrypt their traffic, and also offer a mechanism to validate server identities to their visitors.

Introduction> Introduction # There are many implementations of the SQL database language available on Linux and Unix-like systems. MySQL and MariaDB are two popular options for deploying relational databases in server environments.

About SPF Record> About SPF Record # An SPF record is a type of Domain Name Service (DNS) record that identifies which mail servers are permitted to send email on behalf of your domain.

Status: Deprecated> Status: Deprecated # This article covers a version of CentOS that is no longer supported. If you are currently operating a server running CentOS 6, we highly recommend upgrading or migrating to a supported version of CentOS.

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # A Virtual Private Network (VPN) allows you to traverse untrusted networks as if you were on a private network. It gives you the freedom to access the internet safely and securely from your smartphone or laptop when connected to an untrusted network, like the WiFi at a hotel or coffee shop.

Status: Deprecated> Status: Deprecated # This article covers a version of CentOS that is no longer supported. If you are currently operating a server running CentOS 6, we highly recommend upgrading or migrating to a supported version of CentOS.

Introduction> Introduction # It’s well known that the LEMP stack (Linux, nginx, MySQL, PHP) provides unmatched speed and reliability for running PHP sites. Other benefits of this popular stack such as security and isolation are less popular, though.

Introduction> Introduction # While connecting to your server through SSH can be very secure, the SSH daemon itself is a service that must be exposed to the Internet to function properly.

Introduction FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of delivering files.

Introduction> Introduction # When operating a web server, it is important to implement security measures to protect your site and users. Protecting your web sites and applications with firewall policies and restricting access to certain areas with password authentication is a great starting point to securing your system.

[*]Introduction[*] When you first create a new Debian 9 server, there are a few configuration steps that you should take early on as part of the basic setup. This will increase the security and usability of your server and will give you a solid foundation for subsequent actions.

Introduction> Introduction # This tutorial walks you through the setup and configuration of an Apache server secured with an SSL certificate. By the end of the tutorial, you will have a server accessible via HTTPS.

Introduction> Introduction # SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with an Ubuntu server, chances are you will spend most of your time in a terminal session connected to your server through SSH.

Introduction> Introduction # FreeIPA is an open-source security solution for Linux which provides account management and centralized authentication, similar to Microsoft’s Active Directory. FreeIPA is built on top of multiple open source projects including the 389 Directory Server, MIT Kerberos, and SSSD.