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subnet mask A binary value used to divide IP networks into
smaller sub-networks or subnets. This mask is
used to help determine whether IP packets need
to be forwarded on to other subnets.
TCP/IP Transmission Control Protocol/Internet Protocol.
Suite of protocols that act as the base protocol
for the Internet.
TCP port A logical connection point in the software of a
TCP host or device. When two IP devices talk,
they establish a socket which consists of a
source and destination TCP port number on both
ends.
telnet Command and protocol to establish a terminal
connection between two hosts on an IP network.
UTP Unshielded Twisted Pair. A cable used for
telephone and computer-to-computer
connections.
WAN Wide Area Network.