Use of

Error Document


Password protection

Deny visitors by IP address

Deny visitors by referrer

Hot link prevention techniques

Blocking offline browsers and 'bad bots'

DirectoryIndex uses

Adding MIME types

Enable SSI with .htaccess

Enable CGI outside of the cgi-bin

Disable directory listings

Setting server timezone

Changing server signature

Preventing access to your PHP includes files

Prevent access to php.ini

Forcing scripts to display as source code

Ensuring media files are downloaded instead of played

Setting up Associations for Encoded Files

Preventing requests with invalid characters

Some Useful Resources