To build an internal FreeBSD Update Server some requirements should be met.
A running FreeBSD system.
Note: At a minimum, updates require building on a FreeBSD release greater than or equal to the target release version for distribution.
A user account with at least 4 GB of available space. This will allow the creation of updates for 7.1 and 7.2, but the exact space requirements may change from version to version.
An ssh(1) account on a remote machine to upload distributed updates.
A web server, like Apache, with over half of the space required for the build. For instance, test builds for 7.1 and 7.2 consume a total amount of 4 GB, and the webserver space needed to distribute these updates is 2.6 GB.
Basic knowledge of shell scripting with Bourne shell, sh(1).