This part of the CentOS 5 server setup howtos focuses on server security and reliability, showing how to harden the server to prevent break-ins and hacks as well as how to make the server more robust in the event of a system failure.
This how-to will show you how to configure:
This part of the CentOS 5 server setup howtos will show you how to configure Dovecot and Postfix to enable POP3/IMAP/SMTP services on your server, optionally using Response for mail autoresponders and amavisd-new for spam and virus filtering.
This part of the CentOS 5 server setup howtos will show you how to configure the MySQL database server to enable SQL services on your server.
This part of the CentOS 5 server setup howtos will show you how to configure OpenSSH to enable secure, key-based password-less authentication as well as user jail rooting. OpenSSH's internal SFTP server will also be configured for enabling fast and secure file transfers to the server.
As of writing, the most recent version of CentOS available is 5.6 so I will be using it as the basis for this howto. If a newer version is available, I recommend you use that version instead. Much of these instructions should still apply, especially if it is only a newer 5.x release.
