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SLP (Service Location Protocol) DA (Directory Agent) A protocol that registers services available on a network and gives users easy access to them. When a service is added to the network, the service uses SLP to register itself on the network. SLP/DA uses a centralized repository for registered network services.
SMTP (Simple Mail Transfer Protocol) A protocol used to send and transfer mail. Its ability to queue incoming messages is limited, so SMTP usually is used only to send mail, and POP or IMAP is used to receive mail.
spam Unsolicited email; junk mail.
SSL (Secure Sockets Layer) An Internet protocol that allows you to send encrypted, authenticated information across the Internet.
static IP address An IP address that is assigned to a computer or device once and is never changed.
Stratum 1 An Internet wide, authoritative Network Time Protocol (NTP) server that keeps track of the current UTC time. Other stratums are available (2, 3, and so forth); each takes its time from a
subnet A grouping on the same network of client computers that are organized by location (different floors of a building, for example) or by usage (all
TCP (Transmission Control Protocol) A method used along with the Internet Protocol (IP) to send data in the form of message units between computers over the Internet. IP takes care of handling the actual delivery of the data, and TCP takes care of keeping track of the individual units of data (called packets) into which a message is divided for efficient routing through the Internet.
TTL
TXT (text) record A DNS record type that stores a text string for a response to a DNS query.
UCE (unsolicited commercial email) See spam.
Glossary
