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S
S/MIME
S/MIME is a security protocol for e-mail that accomplishes two goals - privacy and authentication. Privacy means that you can send an e-mail message to someone and know that only the intended recipient can read it. Authentication means that you can receive an e-mail from someone and be certain that the message actually came from that sender. You can also combine these two techniques and send an e-mail that is both private and authenticated; you know that no one else will read it, and the receiver knows that you really sent it.
Script
A script is a type of program that consists of a set of instructions for another application or utility to use.
SCSI
An acronym for Small Computer Standard Interface (SCSI) is a standard data connection used mostly for hard drives and CD-ROM drives, but also a common interface for scanners and sometimes printers. Currently the fastest (and the most flexible) method of interfacing with hard drives.
SDH
An acronym for Synchronous Digital Hierarchy. High speed, synchronous network standard designed to run on fibre at digital transmission rates of 155.52 Mbps 9STM-1).
SDSL
An acronym for Symmetric Digital Subscriber Line, SDSL is a revolutionary addition to the DSL range broadband technologies. SDSL transmits data at the same speed in both directions, unlike ADSL which is faster in one direction than the other.
Search Engine
A search engine is a type of software that creates indexes of databases or Internet sites based on the titles of files, keywords, or the full text of files. The search engine has an interface that allows you to type what you're looking for into a blank field. It then gives you a list of the results of the search. When you use a search engine on the Web, the results are presented to you in hypertext, which means you can click on any item in the list to get the actual file.
Security Policy
A set of policies and guidelines relating defined by a company in relation to their Information Security. This could cover areas such as the classification of information; password usage; e-mail and Internet usage.
See also Information Security
Server
A server is a computer that handles requests for data, e-mail, file transfers, and other network services from other computers (i.e. clients).
Shareware
Shareware is software that is freely distributed for a small fee paid on an "honour system". You are not required to pay the fee to try the program, but if you like the software enough to use it, you are expected to send the fee directly to the creator.
Shockwave
Shockwave is a set of programs that allow Macromedia Director animation files to be played over the Internet with a web browser. Possible uses for this type of animation on the Web include online advertising, games, training, and animated logos.
Signature
A signature is text automatically included at the bottom of an e-mail message or newsgroup posting to personalise it. This can be anything from a clever quote to some additional information about the sender, such as a title, company name and additional e-mail addresses.
SLA
An acronym for Service Level Agreement, an SLA is where a supplier dictates a specific level of performance that they would not fall below. Star offers a range of SLA's on products and solutions.
SLIP
An acronym for Serial Line Internet Protocol, SLIP is a communications protocol that, like PPP, allows you to connect your computer to the Internet itself using a telephone line. It is part of the TCP/IP suite of programs necessary to connect to and use the Internet.
If you have a dial-up account to an Internet service provider, you are using either PPP or SLIP to make your connection to the Internet. Although SLIP is easy to install and use, it does not provide the error correction or negotiation features that PPP has. For this reason, PPP is rapidly replacing SLIP as the more common standard.
See also PPP; TCP/IP
SMTP
An acronym for Simple Mail Transfer Protocol, SMTP is the protocol used for routing e-mail across the Internet.
SNMP
(Simple Network Management Protocol) This is the protocol used almost exclusively in TCP/IP networks providing the means to monitor and control network devices and to manage configurations, statistics collection, performance and security.
See also TCP/IP
Spam
Also known as UCE (Unsolicited Commercial E-mail), spam is unsolicited or junk e-mail from the Internet. It is often in the form of the same piece of information (i.e. advertising) sent to a large number of people who didn’t ask for it. The e-mail addresses may have come from a list of subscribers to a newsgroup or supplied by a company who specialise in producing e-mail lists.
See also e-mail filtering; anti-spam service; blacklist/whitelist
SSL
An acronym for Secure Socket Layer, SSL is a protocol developed by Netscape Communications Corporation for securing data transmission in commercial transactions on the Internet. Using public-key cryptography, SSL provides server authentication, data encryption, and data integrity for client/server communications.
String/Search String
A string refers to a sequence of characters, words, or other elements that are connected to each other in some way. A search string usually refers to a string of words or a phrase that is used to search and locate or retrieve a specific piece of information contained in a database or a set of documents.
Syntax Error
Syntax is the order in which words and phrases are put together, such as a URL which consists of several phrases that are strung together to define a location or service on the Internet. A syntax error occurs when a user (or programmer) has put words in an order that a program does not understand. A syntax error while surfing the Web may be caused by a mistyped or inadvertently rearranged URL, making it incomprehensible to a web browser.
See also URL
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