Apple Mac OS X Server Migration For Version 10.3 or Later Manuel d'utilisateur télécharger pdf (Page 51)

Glossary

This glossary defines terms and spells out abbreviations you may encounter while

working with online help or other Mac OS X Server Documentation. References to

terms defined elsewhere in the glossary appear in italics.

alias Another name at your domain that is not the user’s login name, but will send

incoming email to that user.

DNS (Domain Name System) A distributed database that maps IP addresses to

domain names. A DNS server, also known as a name server, keeps a list of names and

the IP addresses associated with each name.

filter A “screening” method used to control access to your server. A filter is made up of

an IP address and a subnet mask, and sometimes a port number and access type. The

IP address and the subnet mask together determine the range of IP addresses to which

the filter applies.

firewall Software that protects the network applications running on your server. IP

Firewall service, which is part of Mac OS X Server software, scans incoming IP packets

and rejects or accepts these packets based on a set of filters you create.

IMAP (Internet Message Access Protocol) A client-server mail protocol that allows

users to store their mail on the mail server rather than download it to the local

machine. Mail remains on the server until the user deletes it.

IP (Internet Protocol) A method used with Transmission Control Protocol (TCP) to send

data between computers over a local network or the Internet. IP delivers packets of

data, while TCP keeps track of data packets.

ISP (Internet service provider) A business that sells Internet access and often provides

web hosting for ecommerce applications as well as mail services.

Kerberos A secure network authentication system. Kerberos uses tickets, which are

issued for a specific user, service, and period of time. Once a user is authenticated, it is

possible to access additional services without retyping a password (this is called single-

sign on) for services that have been configured to take Kerberos tickets. Mac 0S X

Server uses Kerberos v5.

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Apple Mac OS X Server Migration For Version 10.3 or Later Manuel d'utilisateur Page 51