User`s guide

Glossary
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Internet Security Association and Key Management Protocol (ISAKMP)
A protocol that defines procedures and packet formats to establish, negotiate, modify and delete
Security Associations (SAs). SAs contain all the information required for execution of various
network security services, such as the IP layer services (such as header authentication and
payload encapsulation), transport or application layer services, or self-protection of negotiation
traffic. ISAKMP defines payloads for exchanging key generation and authentication data. These
formats provide a consistent framework for transferring key and authentication data which is
independent of the key generation technique, encryption algorithm and authentication
mechanism.
ISAKMP is distinct from key exchange protocols in order to cleanly separate the details of
security association management (and key management) from the details of key exchange. There
may be many different key exchange protocols, each with different security properties.
However, a common framework is required for agreeing to the format of SA attributes, and for
negotiating, modifying, and deleting SAs. ISAKMP serves as this common framework.
joining
In mesh ZigBee networks, joining is the process of a node becoming part of a ZigBee PAN. A
node becomes part of a network by joining to a coordinator or a router (that has previously joined
to the network). During the process of joining, the node that allowed joining (the parent) assigns
a 16-bit address to the joining node (the child).
MAC address
A unique network identifier. All network devices are required to have their own unique MAC
address. The MAC address is on a sticker on your Digi device. The number is displayed as 12
hexadecimal digits, usually starting with 00:40:9D.
Management Information Base (MIB)
A formal description of a set of network objects that can be managed using the Simple Network
Management Protocol (SNMP).
Mobile Device Provisioning Wizard
A wizard for provisioning Digi Cellular Family products. Provisioning configures the Digi
Cellular Family device with the required configuration used to access the mobile network.
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 () used in
one network to a different IP address known in 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.