User`s guide

Glossary
138  Digi Connect Family User’s Guide
Management Information Base (MIB)
A formal description of a set of network objects that can be managed using the Simple
Network Management Protocol (SNMP).
MIB
See Management Information Base.
modem emulation
A serial port configuration where the port acts as a modem. The Digi device emulates
modem responses to a serial device and seamlessly sends and receives data over an
Ethernet network instead of a Public Switched Telephone Network (PSTN). The
advantage for a user is the ability to retain legacy software applications without
modification and use a less expensive Ethernet network in place of public telephone
lines. Also known as pseudo-modem or pmodem.
NAT
NAT (Network Address Translation) is the translation of an Internet Protocol address
(IP address) used within one network to a different IP address known within another
network through a NAT table that does the global-to-local and local-to-global IP
address mapping.This increases security since each outgoing or incoming request must
go through a translation process that also authenticates the request or matches it to a
previous request. NAT can be statically defined or it can be set up to dynamically
translate from and to a pool of IP addresses. NAT also conserves on the number of
global IP addresses needed and it uses a single IP address in its communication with the
world.
PEAP
See Protected Extensible Authentication Protocol.
port forwarding
A serial port configuration that sends data directly to a specific port instead of the path
determined by the router based on traffic.
POST
See Power-On Self Test.
Power-On Self Test (POST)
When power is turned on, POST (Power-On Self-Test) is the diagnostic testing
sequence that a computer's basic input/output system (or "starting program") runs to
determine if the computer keyboard, random access memory, disk drives, and other