Glossary - Black Box Terminal Server User Manual

This chapter provides definitions for Terminal Server terms.
BOOTP (BOOTstrap An Internet protocol that enables a diskless workstation to discover its own IP address, the
Protocol) IP address of a BOOTP server on the network, and a file to be loaded into memory to boot
the machine. This enables the workstation to boot without requiring a hard or floppy disk
drive.
Community (SNMP) An SNMP community is the group that devices and management stations running SNMP
belong to. It helps define where information is sent.
DHCP (Dynamic Host A TCP/IP protocol that provides static and dynamic address allocation and management.
Configuration
Protocol)
Direct Connection Connections that bypass the Terminal Server enabling the user to log straight into a specific
host. A direct connection is recommended where a user logging in to the Terminal Server is
not required.
Ethernet A high-speed (10Mbps,100Mbps) cable technology that connects devices to a LAN, using
one or more sets of communication protocols.
Local Authentication Uses the user ID and password stored within the Terminal Server User database.
Modem Initialization A series of commands sent to the modem by a communications program at start up. These
String commands tell a modem how to set itself up in order to communicate easily with another
modem.
MOTD Message of the day. This is defined by a file whose contents display when users log into the
Terminal Server.
Multicast The broadcasting of messages to a specified group of workstations on a LAN, WAN, or
internet.
NAK (Negative A communication control character sent by the receiving destination indicating that the last
Acknowledgment) message was not received correctly.
Reverse Connection Connections that originate from a host that go directly to a serial device through the
Terminal Server.
Silent Connection Silent connections are the same as direct connections except that they are permanently
established. The host login prompt is displayed on the screen. Logging out redisplays this
prompt. Silent connections, unlike direct connections, however, make permanent use of
pseudo tty resources and therefore consume host resources even when not in use.
SNMP (Simple A protocol for managing network devices.
Network Management
Protocol)
Subnet/Prefix Bits Identifies the device's IP address, which portion constitutes the network address and which
portion constitutes the host address.

Glossary

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