If you are concerned about security there is good book that guides you through how to set up an intranet using secured services (Apache-SSL, PostgreSQL), etc with Red Hat 6.2. The new version of this book is written for version 7.1/7.2 but they only released the book under GPL licence only after it has been for purchase for a while (hope that time will come soon :)). Hope this link helps
http://www.openna.com/products/books/securing-optimizing-linux/old.htm
