Definition of Security Icons:
This allows you to secure a complete folder from access by anyone (except your host) but placing a password on a specific folder.
This feature allows you to block a single IP address or a range of IP addresses. Thus preventing them access to your site.
This allows you to generate SSL certificates, signing requests, and keys. These are all steps to setup a SSL
(VPS Clients only) This allows you to setup SFTP and other secure connections to your server
This allows you to prevent files from being used on other sites with things like the tags
This prevents people from sharing password publicly and gives you the ability to suspend their access and send them to a suspended page.
GnuPG is a publicly available encryption scheme that uses the "public key" approach.
With GnuPG, messages are encrypted using a "public key" however, they can only be decrypted by a "private key", which is retained by the intended recipient of the message.