
T
TCP
Transmission Control Protocol; the rules for the conversion of data messages into packets. TCP providesSee
ISO/OSI model, Layer 4, packet, transport layer.
TCP Probes
These are Server Health Checks. TCP health checks basically have Equalizer attempting to open a TCP connection
to a server and determining if the server accepts. If the server does not accept within the configured time, the
server is marked "down" and no further traffic is sent to that server until it starts responding to health checks.
TCP/IP
Transmission Control Protocol/Internet Protocol; the rules for transmitting data over networks and the Internet.
Telnet
Part of TCP/IP, a protocol that enables a user to log onto a remote computer connected to the Internet. See
TCP/IP.
traceroute
A utility that shows the route over which a packet travels to reach its destination.
transaction
A transaction is a Layer 7 interaction between a client and a server over a network protocol that defines the
format of the interaction. An HTTP transaction, for example, is a single client request and associated server
response. HTTP is thus a transaction-oriented protocol. This is in contrast to Layer 4 TCP, which is a connection-
oriented protocol and does not provide the notion of a transaction to applications running over it.
Transmission Control Protocol (TCP)
See TCP.
Transmission Control Protocol/Internet Protocol (TCP/IP)
See TCP/IP.
transport layer
See Layer 4. See also ISO/OSI model.
TTL
Time-to-live, the length of time, in seconds, that a client’s DNS server should cache a resolved IP address.
U
User Datagram Protocol (UDP)
Within TCP/IP, a protocol that is similar to Layer 4 (the transport layer). UDP converts data into packets to be
sent from one server to another but does not verify the validity of the data. See ISO/OSI, TCP/IP, and transport
layer.
V
virtual cluster
An endpoint that acts as the network-visible port for a set of hidden back-end servers. See cluster, endpoint,
FTP cluster, geographic cluster, and server cluster.
Copyright © 2013 Coyote Point Systems. A subsidiary of Fortinet, Inc.
All Rights Reserved.
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Equalizer Administration Guide
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