This article describes how to use Asterisk, FreePBX, or AsteriskNOW to forward calls by using the your telephone company’s *72 / *73 feature via analog FXO (POTS) channels.

Advanced command reference for Linux. We assume you already know basic commands such as ls, pwd, mkdir, gzip, etc. Here are some useful additions which you may not already know.

This is a set of short code snippets to control various methods of URL redirection using .htaccess files for Apache/Linux.

If you run a Unix server on the Internet, your server will, eventually, be hit by either a script kiddie or a botnet which will try to guess SSH passwords in order to gain access to your system. Here are a number of resources and methodologies to block frequent brute force SSH attempts on your server(s).

The definitive guide to Xylogics Annex terminal servers. These asynchronous terminal servers are typically used to connect to console ports, modems, terminals, and printers.

Intuit/Quickbooks does not provide telephone support for Linux servers, and we have found their online support documentation to be very lacking in some key details that must be properly configured in order to get Multi-User access working properly.