User manual

Appendix F
174
Authentication Post Office Protocol (APOP)
Authentication POP is a challenge-response authentication scheme built
on top of the standard POP protocol. APOP is designed in a way that
protects your password from being sent across the network. To keep
your password safe, the server stores your password in a file on local
disk. When your mail client connects to the APOP server, a magic
string is sent back. That string contains a unique identifier for the
current session based upon the process id (PID) and current time.
Carrier sense
In a local area network (LAN), an ongoing activity of a data station to
detect whether another station is transmitting.
Carrier sense multiple access with collision detection (CSMA/CD)
A protocol that requires carrier sense and in which a transmitting data
station that detects another signal while transmitting stops sending,
sends a jam signal and then waits for a variable period of time before
sending again. Used in Ethernet LAN technology.
CGI
see Common gateway interface (CGI)
Common gateway interface (CGI)
A set of rules that describe how a Web server communicates with
another application running on the same computer and how the
application (called a CGI program) communicates with the Web server.
Any application can be a CGI program if it handles input and output
according to the CGI standard.
CSMA/CD
see Carrier sense multiple access with collision detection (CSMA/CD)
DHCP
see Dynamic Host Configuration Protocol (DHCP)
DNS
see Domain Name System (DNS)
Domain name
The location of an organization or other entity on the Internet. For
example, www.cobalt.com locates an Internet address for “cobalt.com”
at a particular IP address and a particular host server named “www.”
Domain Name System (DNS)
The Internet service responsible for translating a human-readable host
name such as cobalt.com into a numeric IP address (111.123.45.67) for
TCP/IP communications.