WP Super Secure and Fast htaccess is a wordpress plugin that allow you to automatically insert in your .htaccess file directives that:

• Protect .htaccess From Outside Access
• Protect wp-config.php From Unwanted Access
• Disable Directory Browsing
• Protect From Spam Comments
• Prevent Hotlinking
• Using mod_gzip Compression
• Using mod_deflate Compression
• Disable ETags
• Set Expiration Times For Caching

This plugin was inspired by a link of Francesco Gavello to this impressive post of Antti Kokkonen.

Download it