Kerio Tech Version 6.5.2 - Manual (Page 385)

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Notifications
Short message (notification) about a particular event — e.g. new email. It is usually sent
as a text message (SMS) to a cellular phone.
PHP
PHP is a programming language used for creating web pages.
Port
16-bit number used by TCP and UDP for application (services) identification on a given
computer.
Spam
Unwanted, usually advertisement email. Spam are usually sent in bulk and the recipient
addresses are obtained by illegal means (e.g. by tapping the network communication).
SSL
A protocol used to secure and encrypt the TCP connection. Secure Socket Layer was orig-
inally designed by Netscape to secure transmission of web pages using HTTP protocol.
Today it is supported by almost all standard internet protocols — SMTP, POP3, IMAP,
LDAP, etc.
At the beginning of communication, an encryption key is requested and transferred using
asymmetrical encryption. This key is then used to encrypt (symmetrically) the data.
A security protocol for the encrypted transfer of the data in the Internet (used in HTTPS).
TLS
Transport Layer Security is the successor to SSL (version 3.1), which is used for encryption
of data over networks. This version is approved by the IETF and it is accepted by all the
top IT companies (i.e. Microsoft Corporation).
URI
URI (Uniform Resource Identifier) is a standard that describes an Internet resource. It
describes the mechanism of the access to an object (e.g. a protocol), identification type
(e.g. DNS, IP) of the computer where the object is located and location of the object at the
computer (e.g. the path and file name). The subsets of URI are URL and URN.
URL
URL (Unique Resource Locator) is a subset of URI, which uniquely describes the location
of a specific file in a computer network.
WWW
World Wide Web (the abbreviation WWW or web) is currently the most popular service
offered in the Internet. It allows transferring multimedia files (texts, sounds, images).