Specifications

Glossary 309
FTP File Transfer Protocol. A protocol that allows computers to transfer files over a
network. FTP clients using any operating system that supports FTP can connect to a file
server and download files, depending on their access privileges. Most Internet browsers
and a number of freeware applications can be used to access an FTP server.
group A collection of users who have similar needs. Groups simplify the administration
of shared resources.
group folder A folder that organizes documents and applications of special interest to
group members and allows group members to pass information among themselves.
guest computer A computer that doesn’t have a computer account.
guest user A user who can log in to your server without a user name or password.
GUID Globally unique identifier. A hexadecimal string that uniquely identifies a user
account, group account, or computer list. Also used to provide user and group identity
for access control list (ACL) permissions, and to associate particular users with group
and nested group memberships. GUIDs are 128-bit values, which makes the generation
of duplicate GUIDs extremely unlikely.
home directory See home folder.
home folder A folder for a user’s personal use. Mac OS X also uses the home folder to
store system preferences and managed user settings for Mac OS X users. Also known as
a home directory.
HTML Hypertext Markup Language. The set of symbols or codes inserted in a file to be
displayed on a web browser page. The markup tells the web browser how to display a
webpage’s words and images for the user.
HTTP Hypertext Transfer Protocol. The client/server protocol for the World Wide Web.
HTTP provides a way for a web browser to access a web server and request hypermedia
documents created using HTML.
Hypertext Markup Language See HTML.
Hypertext Transfer Protocol See HTTP.
iChat The Mac OS X instant messaging application.
iChat service The Mac OS X Server service that hosts secure chats. iChat service uses
Open Directory authentication to verify the identity of chatters and SSL to protect the
privacy of users while they chat.