TCP
Transmission Control Protocol (TCP) is protocol used along with the Internet Protocol (IP) to send
data in the form of individual units (called packets) between computers over the Internet. While
IP takes care of handling the actual delivery of the data, TCP takes care of keeping track of the
packets that a message is divided into for efficient routing through the Internet. For example, when
a webpage is downloaded from a Web server, the TCP program layer in that server divides the file
into packets, numbers the packets, and then forwards them individually to the IP program layer.
Although each packet has the same destination IP address, it may get routed differently through
the network. At the other end, TCP reassembles the individual packets and waits until they have all
arrived to forward them as single message.
TCP/IP
The underlying technology behind the Internet and communications between computers in a
network. The first part, TCP, is the transport part, which matches the size of the messages on either
end and guarantees that the correct message has been received. The IP part is the
user’s computer
address on a network. Every computer in a TCP/IP network has its own IP address that is either
dynamically assigned at startup or permanently assigned. All TCP/IP messages contain the address
of the destination network as well as the address of the destination station. This enables TCP/IP
messages to be transmitted to multiple networks (subnets) within an organization or worldwide.
WEP
Wired Equivalent Privacy (WEP) is a basic wireless security provided by Wi-Fi. In some instances,
WEP may be all a home or small-business user needs to protect wireless data. WEP is available in
40-bit (also called 64-bit), or in 108-bit (also called 128-bit) encryption modes. As 108-bit encryption
provides a longer algorithm that takes longer to decode, it can provide better security than basic
40-bit (64-bit) encryption.
WPA2
Wi-Fi Protected Access II (WPA2) is a security protocol and security certification program
developed by the Wi-Fi Alliance to secure wireless computer networks. WPA2-PSK, AES (Advanced
Encryption Standard) has replaced WPA and provides significant security improvements over this
method. In particular, it introduces CCMP, a new AES-based encryption mode with strong security.
WPA2 AES is the most secure encryption method, and is also based on 128-bit encryption key.
Wi-Fi
Wireless Fidelity. An interoperability certification for wireless local area network (LAN) products
based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard.
100
Rev Version 1.4.1
