User`s manual

IPL T SF Series • Glossary
Glossary, cont’d
B-4
Pass-through allows control systems to work with the IPL T SF
unit and provides a link between two ports.
Ping is a utility that tests network connections. It is used to
determine if the host has an operating connection and is able to
exchange information with another host.
Port number is a preassigned address within a server that
provides a direct route from the application to the Transport
layer or from the Transport layer to the application of a TCP/IP
system.
Static IP refers to an IP address that has been specifically
(instead of dynamically—see DHCP) assigned to a device
or system in a network configuration. This type of address
requires manual configuration of the actual network device
or system and can only be changed manually or by enabling
DHCP.
Transmission Control Protocol/Internet Protocol (TCP/IP)
is the communication protocol (language) of the Internet.
Computers and devices with direct access to the Internet are
provided with a copy of the TCP/IP program to allow them to
send and receive information in an understandable form.
Telnet is a utility available on most PCs that allows the
computer system to communicate with one of its remote users/
clients. A user who wishes to access a remote system initiates a
Telnet session, using the address of the remote client. The user
may be prompted to provide a user name and password if the
client is set up to require them.