This how to helps you to create secure connection via ssh between your unix and linux systems. All examples written for RedHat based systems. Also we assume that you already have installed openssh server and running, if not do this steps:
This manual describes how to create file server, where users from can access their files with samba client and FTP server, (from windows too). In this example there are two users, testa and testu. User testa can read and write in admin (FTP only) and public directories. User testu can read and write in the public directory and can read admin directory.
Personal Package Archives (PPA) in Ubuntu - it catalogs APT, which are provided by third parties on Launchpad (platform-party developers Ubuntu). That's where the freshest and the coolest programs grouped into packages Debian, which can be downloaded. It is well known that this service using Google and the community Wine.