Glossary Terms

Along with POP3, one of the two most widely used email transfer methods. IMAP synchronizes email account information with the mail server on a regular basis. If a user logs into multiple computers to check email, IMAP will allow the user to see what messages they have viewed, replied to, forwarded, etc. POP3 does not display this information.

The page, most often titled index.php or index.html, viewed by default when a visitor accesses a directory of a website. If no index page exists for the specified directory, the visitor will see a list of files in that directory, unless indexing is disabled.

Previously called a MIME (Multipurpose Internet Mail Extensions) Type, this component of a file identifies the file type, so that web browsers know how to handle it.

ionCube is a loader that protects the intellectual property of software developers who produce software written in PHP. The Zend Guard Loader is another tool that can encode and decode PHP scripts. Both of these loaders are installed by default.

A number that identifies a computer on a network, making it possible for other computers to find and communicate with it. It is a unique number consisting of 4 parts separated by dots. 123.45.678.9 could be an IP number. Every machine that is on the Internet has a unique IP number.