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126 S100 User Guide – Rev. D – June 2005
SyncServer S100
Firewall
Firewalls are software and hardware systems that define access between two networks,
offering protection from outside data that could be harmful, such as a virus sent using the
Internet.
GMT
Greenwich Mean Time, the mean solar time of the meridian of Greenwich, England, used
until 1972 as a basis for calculating standard time throughout the world.
GPS
Global Positioning System. The GPS is a constellation of ~29 (or more) US Department of
Defense satellites orbiting the earth twice a day.
Hash
Also called “hash function” or hashing, used extensively in many encryption algorithms.
Hashing transforms a string of characters usually into a shorter, fixed-length value or key.
Information in a database is faster to search when you use a hashed key, than if you were to
try to match the original data.
HTML
HyperText Markup Language, the computer language used to create pages for the World
Wide Web.
HTTP
HyperText Transfer (or Transport) Protocol, the protocol most often used to transfer
information from World Wide Web servers to users of the Web.
HTTPS
HTTP over an SSL
connection.
Identity Certificate
Also called Digital Certificates
. The hash creates a message digest based on the contents of
the message. The message is then encrypted using the publisher's private key, then it is
appended to the original message.
IEEE
Institute of Electrical and Electronic Engineers, an international organization that sets
standards for electrical and computer engineering.
IETF
Internet Engineering Task Force, an international organization which sets standards for
Internet protocols in their Request for Comment (RFC) papers.
These papers are numbered (RFC 1305, RFC 868, and so on) and are referred to by
engineers worldwide as they work on technologies that support IETF standards.