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Encrypt
The translation of data, a secret code. Encryption is the most effective way to achieve data security. Unencrypted data is called
plain text, encrypted data is referred to as cipher text.
Global Server Load Balancer .GLSB.
Geographically front-ends server farms by balancing traffic requests to multiple servers using special load-balancing
protocols that monitor the availability of individual servers and route requests to the most available server.
L4 Switch .L4. Switching
A device that delivers routing between disparate networks and clients at different layers of the OSI model. Layer 2 wire
speed, layer 3 IP routing, and layer 4 policy access, and provides switching capabilities that provide resilience, performance
enhancements, and ease of traffic management.
Hashing
Producing hash values for accessing data or for security. A hash value (or simply hash) is a number generated from a string
of text. The hash is substantially smaller than the text itself, and is generated by a formula in such a way that it is extremely
unlikely that some other text will produce the same hash value. Hashes play a role in security systems where they’re used to
ensure that transmitted messages have not been tampered with. The sender generates a hash of the message, encrypts it, and
sends it with the message itself. The recipient then decrypts both the message and the hash, produces another hash from the
received message, and compares the two hashes. If they’re the same, there is a very high probability that the message was
transmitted intact.
HTTP
Short for Hypertext Transfer Protocol, the underlying protocol used by the World Wide Web. HTTP defines how messages are
formatted and transmitted, and what actions Web servers and browsers should take in response to various commands.
HTTPS
By convention, Web pages that require an SSL connection start with https: instead of http.
ICMP
Short for Internet Control Message Protocol, an extension to the Internet Protocol (IP) defined by RFC 792. ICMP supports
packets containing error, control, and informational messages.
IMAP
Short for Internet Message Access Protocol, a protocol for retrieving e-mail messages.
IP
Abbreviation of Internet Protocol, pronounced as two separate letters. IP specifies the format of packets, also called
datagrams, and the addressing scheme. Most networks combine IP with a higher-level protocol called Transport Control
Protocol (TCP) which establishes a virtual connection between a destination and a source.
Technology Primer: Secure Sockets Layer (SSL)
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