The TCI Library is maintained by Telephone Collectors International, a non-profit organization, as a public service. It supports our goal of helping to preserve the history of telephony -- particularly fragile paper documents that may otherwise be lost to posterity.

The VTDA purpose is to archive vintage technology, digitally. That means scanning manuals, advertising, boxes and circuit boards as well as recovering data from magnetic, optical and other forms of media. The main focus is on computing, telephony and radio, but sometimes other things catch our eye.

The Microsoft Exploitability Index is designed to provide additional information to help customers better prioritize the deployment of Microsoft security updates. This index provides customers with guidance on the likelihood of functioning exploit code being developed for vulnerabilities addressed by Microsoft security updates, within the first thirty days of that update's release.

Esta edición, que acumula casi de 12 años de experiencias y trabajo, tiene un total de 680 páginas y corrige varios errores tipográficos, actualiza algunos procedimientos (relacionados con SELinux, principalmente) y otras mejoras menores. Salvo que haya algún error serio que corregir, o bien si se demora aún más el lanzamiento de CentOS 6, confío que esta sea la última edición basada sobre CentOS 5.