Glossary

This chapter provides definitions for IOLAN terms.

BOOTP (BOOTstrap An Internet protocol that enables a diskless workstation to discover its own IP address, the IP

Protocol)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.

Callback

A security feature where the IOLAN calls back the User at a predetermined number defined in

 

the Users account.

CHAP (Challenge

Standard authentication protocol for PPP connections. It provides a higher level of security than

Handshake

PAP and should be used whenever possible. see PAP

Authentication

 

Protocol)

 

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 IOLAN enabling the user to log straight into a specific host. A

 

direct connection is recommended where a user logging in to the IOLAN 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.

Fixed Callback

A method where there is a specific number defined to callback a user.

Local Authentication

Uses the user ID and password stored within the IOLAN User database.

LPD

Line Printer Daemon. A printer protocol that uses TCP/IP to establish connections between

 

printers and workstations on a network. The technology was developed originally for BSD

 

UNIX and has since become the de facto cross-platform printing protocol.

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

 

IOLAN.

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.

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Perle Systems CSS manual Glossary

CSS specifications

Perle Systems, a well-established provider of networking and IoT solutions, offers the innovative Perle CSS (ClearSky Services) platform, designed to facilitate efficient and secure device management. This powerful solution aims to address the challenges of managing a diverse range of devices connected to the Internet, particularly in enterprise, industrial, and M2M (Machine-to-Machine) environments.

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