The suPHP Apache module together with suPHP itself provides an easy way to run PHP scripts with different users on the same server. It provides security, because the PHP scripts are not run with the rights of the webserver's user. In addition to that you probably won't have to use PHP's "safe mode", which applies many restrictions on the scripts.

User management on Fedora 15 is just as easy as on any other distribution or operating system. And the graphical user management tools (there are two) are very intuitive to use. There are two types of user accounts on Fedora 15 – Standard and Administrator. The Administrator has root or super user privileges. During installation, the user created may be added to the Administrators group.

This howto shows one method of doing mass virtualhosting using mod_rewrite to dynamically map a list of directories on your filesystem to virtual hosts. Additionally, by rewriting the incoming URL to the user's home directory we can make use of suEXEC to have Apache execute CGI scripts as the owner of the script.

If user and group management has you in a quandary, it's time to take the advanced filesystem security class at the ACLU.

On Ubuntu I have a user account "administrator" which is in the admin group. It has a complicated password for security. OpenSSH by default allows all users to attempt to login remotely. Since user accounts often have weak passwords it's unsafe to allow this.

This tutorial shows how you can serve CGI scripts (Perl scripts) with nginx on Debian Squeeze/Ubuntu 11.04. While nginx itself does not serve CGI, there are several ways to work around this.

This tutorial shows how you can install and run Roundcube webmail (version 0.7.1) web site on a Debian Squeeze or Ubuntu 11.10 system that has nginx installed instead of Apache (LEMP = Linux + nginx (pronounced "engine x") + MySQL + PHP). Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface.

The Java database gains sequences and user defined types in the latest update and closes a security hole

The traditional file permission model, where read, write, and execute permissions are set on each file for the user, group, and others (UGO) has one drawback: It can't be used to define per-user or per-group permissions. For that, you need to employ access control lists (ACL). Eiciel is a graphical tool that integrates with the Nautilus file manager and allows for easy ACL management.