iTP Secure WebServer System Administrator's Guide (Version 7.0)

Glossary
iTP Secure WebServer System Administrator’s Guide—523346-012
Glossary-5
QIO subsystem
QIO subsystem. A product that provides buffers and control blocks for protocol processes,
including TCP/IP, TLAM, and NonStop IPX/SPX running on the same processor.
Request for Comments (RFC). The name of a series of notes that contain surveys,
measurements, ideas, techniques, and observations, along with proposed and
accepted Internet protocol standards. RFCs are edited but not referenced. They are
available across the Internet.
RFC. See Request for Comments (RFC)
Secure Sockets Layer (SSL). A protocol for private communication on the World Wide
Web and authentication of a Web server by a Web client.
server. A process or set of processes that satisfy requests from Web clients in a client-
server environment.
server class. A grouping of duplicate copies of a single server program, all of which
execute the same object program.
server process. A process that implements requests for an application and returns replies
to the requester.
server programs. In NonStop TS/MP, programs that handle the data manipulation and data
output activities for online transaction processing applications. Server programs are
designed to receive request messages from requester programs; perform the desired
operations, such as database inquiries or updates, security verifications, numeric
calculations, or data routing to other computer systems; and return reply messages to
requester programs.
Simple Mail Transfer Protocol (SMTP). The Internet standard protocol for transferring
e-mail messages from one machine to another. SMTP specifies how two mail systems
interact, and specifies the format of control messages the two mail systems exchange
to transfer mail.
SSL. See Secure Sockets Layer (SSL).
subnet address. An extension of the Internet addressing scheme that allows a site to use a
single Internet address for multiple physical networks. Outside of the site using subnet
addressing, routing continues as usual by dividing the destination address into an
Internet portion and local portion. Gateways and hosts inside a site using subnet
addressing interpret the local portion of the address by dividing it into a physical
network portion and host portion.
subsystem. The software or hardware facilities that provide users with access to a set of
communications services.
Transmission Control Protocol (TCP). The Internet standard transport-level protocol that
provides the reliable, full-duplex stream service on which many application protocols
depend. TCP allows a process on one machine to send a stream of data to a process